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Лабораторная работа №9, страница 238 - гдз по физике 8 класс учебник Пёрышкин
Авторы: Пёрышкин И. М.
Тип: Учебник
Издательство: Просвещение
Год издания: 2023 - 2026
Уровень обучения: базовый
Цвет обложки: белый с градусником
ISBN: 978-5-09-102555-2
Допущено Министерством просвещения Российской Федерации
Популярные ГДЗ в 8 классе
Лабораторные работы - страница 238.
App\Models\Task {#1024 // resources/views/models/task/default.blade.php #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 599437 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "238" "field_page_end" => "239" "field_url" => "/8-klass/fizika/peryshkin-uchebnik/lab-9" "field_display_title" => "Лабораторная работа №9" "field_outside_task" => "0" "field_task_type" => Illuminate\Database\Eloquent\Collection {#331 #items: [] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1029 #items: [] #escapeWhenCastingToString: false } "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1026 #items: array:1 [ 0 => App\Models\Branch {#342 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 598780 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Лабораторные работы" "field_branch_order" => null "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1023 #items: [] #escapeWhenCastingToString: false } "field_page_start" => "229" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#333 #items: array:1 [ 0 => App\Models\Book {#1033 #connection: "mysql" #table: "books" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:50 [ "id" => 51 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1030 #items: array:1 [ 0 => App\Models\Term {#1032 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ …10] #original: array:10 [ …10] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_class" => Illuminate\Database\Eloquent\Collection {#1034 #items: array:1 [ 0 => App\Models\Term {#1035 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_publisher" => Illuminate\Database\Eloquent\Collection {#1036 #items: array:1 [ 0 => App\Models\Term {#1037 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_author" => Illuminate\Database\Eloquent\Collection {#1038 #items: array:1 [ 0 => App\Models\Term {#1039 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ …12] #original: array:12 [ …12] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1040 #items: [] #escapeWhenCastingToString: false } "field_book_type" => Illuminate\Database\Eloquent\Collection {#1041 #items: array:1 [ 0 => App\Models\Term {#1042 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ …10] #original: array:10 [ …10] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_country" => Illuminate\Database\Eloquent\Collection {#1043 #items: array:1 [ 0 => App\Models\Term {#1044 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false …25 } ] #escapeWhenCastingToString: false } "field_city" => Illuminate\Database\Eloquent\Collection {#1045 #items: array:1 [ 0 => App\Models\Term {#1046 …30} ] #escapeWhenCastingToString: false } "field_series" => Illuminate\Database\Eloquent\Collection {#1047 #items: [] #escapeWhenCastingToString: false } "field_umk" => Illuminate\Database\Eloquent\Collection {#1048 #items: [] #escapeWhenCastingToString: false } "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1049 #items: array:1 [ 0 => App\Models\Term {#1050 …30} ] #escapeWhenCastingToString: false } "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1051 #items: array:1 [ 0 => App\Models\Term {#1052 …30} ] #escapeWhenCastingToString: false } "field_publication_number" => "3" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1053 #items: array:1 [ 0 => App\Models\Term {#1054 …30} ] #escapeWhenCastingToString: false } "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1055 #items: [] #escapeWhenCastingToString: false } "field_under_the_edition_degree" => null "field_cover_description" => "с градусником" "field_publication_year" => "2023" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => null "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => null "field_link_to_source" => null "field_tasks_count" => "706" "field_priority" => "2" "field_default_folder" => "/fizika_08/Peryshkin-u23/" "field_isbn" => "978-5-09-102555-2" "field_cover" => array:1 [ 0 => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" "alt" => "" "width" => "1350" "height" => "1772" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1056 #items: [] #escapeWhenCastingToString: false } "field_new_book" => Illuminate\Database\Eloquent\Collection {#1057 #items: [] #escapeWhenCastingToString: false } "field_old_book" => Illuminate\Database\Eloquent\Collection {#1058 #items: [] #escapeWhenCastingToString: false } "field_url" => "/8-klass/fizika/peryshkin-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1059 #items: array:1 [ 0 => App\Models\Term {#1060 …30} ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ "class" => 379 "subject" => 556 "class_subject" => 492 ] ] #original: array:50 [ "id" => 51 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1030} "field_class" => Illuminate\Database\Eloquent\Collection {#1034} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1036} "field_author" => Illuminate\Database\Eloquent\Collection {#1038} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1040} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1041} "field_country" => Illuminate\Database\Eloquent\Collection {#1043} "field_city" => Illuminate\Database\Eloquent\Collection {#1045} "field_series" => Illuminate\Database\Eloquent\Collection {#1047} "field_umk" => Illuminate\Database\Eloquent\Collection {#1048} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1049} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1051} "field_publication_number" => "3" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1053} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1055} "field_under_the_edition_degree" => null "field_cover_description" => "с градусником" "field_publication_year" => "2023" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => null "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => null "field_link_to_source" => null "field_tasks_count" => "706" "field_priority" => "2" "field_default_folder" => "/fizika_08/Peryshkin-u23/" "field_isbn" => "978-5-09-102555-2" "field_cover" => array:1 [ 0 => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" "alt" => "" "width" => "1350" "height" => "1772" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1056} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1057} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1058} "field_url" => "/8-klass/fizika/peryshkin-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1059} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ "class" => 379 "subject" => 556 "class_subject" => 492 ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1061 #items: [] #escapeWhenCastingToString: false } ] #original: array:24 [ "id" => 598780 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Лабораторные работы" "field_branch_order" => null "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1023} "field_page_start" => "229" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#333} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1061} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "parent_branches" => Illuminate\Database\Eloquent\Collection {#1062 #items: array:1 [ 0 => App\Models\Branch {#342} ] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1063 #items: array:4 [ 0 => App\Models\Element {#1064 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 746422 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1065 #items: array:1 [ 0 => App\Models\Edition {#1066 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 1636 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Условие" "field_order" => "1" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1067 #items: array:1 [ 0 => App\Models\Term {#1068 …30} ] #escapeWhenCastingToString: false } "field_content_type" => "free" "field_content_mode" => "text, image" "field_page_content_mode" => "image" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Автор" "field_moderator" => "stas" "field_edition_type" => "statement" "field_root_dir" => "0-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1069 #items: [] #escapeWhenCastingToString: false } "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1070 #items: [] #escapeWhenCastingToString: false } "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1071 #items: [] #escapeWhenCastingToString: false } "field_content_source" => null ] #original: array:21 [ "id" => 1636 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Условие" "field_order" => "1" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1067} "field_content_type" => "free" "field_content_mode" => "text, image" "field_page_content_mode" => "image" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Автор" "field_moderator" => "stas" "field_edition_type" => "statement" "field_root_dir" => "0-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1069} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1070} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1071} "field_content_source" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "599437" "type" => "task" ] "text" => """ <p><strong>№ 9 Измерение мощности и работы тока в электрической лампе</strong></p><p><strong>Цель работы</strong> Измерить мощность и работу электрического тока в электрической лампе.</p><p><strong>Приборы и материалы</strong> Лабораторный источник питания (ЛИП), лампа на подставке, ключ, амперметр, вольтметр, часы, соединительные провода.</p><p><span style="color:blue;">Указания к работе</span></p><p><span style="color:blue;">1</span>. Начертите схему электрической цепи последовательного соединения источника тока, ключа и лампы. Добавьте в схему амперметр и вольтметр так, чтобы они измеряли силу тока в цепи и напряжение на лампе.</p><p><span style="color:blue;">2</span>. Соберите электрическую цепь по схеме.</p><p><span style="color:blue;">3</span>. Измерьте силу тока в цепи и напряжение на лампе.</p><p><span style="color:blue;">4</span>. <strong>Обработка результатов измерений</strong>. Результаты прямых измерений с учётом абсолютной погрешности, равной цене деления шкалы прибора, и вычислений записывайте в таблицу 19.</p><figure><figure class="align-center">\n <img src="/media/fizika_08/Peryshkin-u23/0-lab/9.webp?ts=1743680184" alt="Результаты прямых измерений с учётом абсолютной погрешности, равной цене деления шкалы прибора, и вычислений записать в таблицу 19" loading="lazy" width="1638" height="397">\n </figure>\n <figcaption> </figcaption></figure><p><span style="color:blue;">5</span>. Рассчитайте мощность электрического тока в лампе по измеренным значениям силы тока и напряжения.</p><p><span style="color:blue;">6</span>. Измерьте время горения лампы и рассчитайте работу электрического тока в лампе.</p><p><span style="color:blue;">7</span>. Сделайте вывод.</p> """ "img" => array:2 [ 0 => array:5 [ "name" => "9-1.png" "alt" => null "width" => "840" "height" => 815 "path" => "/media/fizika_08/Peryshkin-u23/0-lab/9-1.webp?ts=1738081089" ] 1 => array:5 [ "name" => "9-2.png" "alt" => null "width" => "810" "height" => 255 "path" => "/media/fizika_08/Peryshkin-u23/0-lab/9-2.webp?ts=1738081089" ] ] ] #original: array:7 [ "id" => 746422 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1065} "task" => array:2 [ "refs" => "599437" "type" => "task" ] "text" => """ <p><strong>№ 9 Измерение мощности и работы тока в электрической лампе</strong></p><p><strong>Цель работы</strong> Измерить мощность и работу электрического тока в электрической лампе.</p><p><strong>Приборы и материалы</strong> Лабораторный источник питания (ЛИП), лампа на подставке, ключ, амперметр, вольтметр, часы, соединительные провода.</p><p><span style="color:blue;">Указания к работе</span></p><p><span style="color:blue;">1</span>. Начертите схему электрической цепи последовательного соединения источника тока, ключа и лампы. Добавьте в схему амперметр и вольтметр так, чтобы они измеряли силу тока в цепи и напряжение на лампе.</p><p><span style="color:blue;">2</span>. Соберите электрическую цепь по схеме.</p><p><span style="color:blue;">3</span>. Измерьте силу тока в цепи и напряжение на лампе.</p><p><span style="color:blue;">4</span>. <strong>Обработка результатов измерений</strong>. Результаты прямых измерений с учётом абсолютной погрешности, равной цене деления шкалы прибора, и вычислений записывайте в таблицу 19.</p><figure><figure class="align-center">\n <img src="/media/fizika_08/Peryshkin-u23/0-lab/9.webp?ts=1743680184" alt="Результаты прямых измерений с учётом абсолютной погрешности, равной цене деления шкалы прибора, и вычислений записать в таблицу 19" loading="lazy" width="1638" height="397">\n </figure>\n <figcaption> </figcaption></figure><p><span style="color:blue;">5</span>. Рассчитайте мощность электрического тока в лампе по измеренным значениям силы тока и напряжения.</p><p><span style="color:blue;">6</span>. Измерьте время горения лампы и рассчитайте работу электрического тока в лампе.</p><p><span style="color:blue;">7</span>. Сделайте вывод.</p> """ "img" => array:2 [ 0 => array:5 [ "name" => "9-1.png" "alt" => null "width" => "840" "height" => 815 "path" => "/media/fizika_08/Peryshkin-u23/0-lab/9-1.webp?ts=1738081089" ] 1 => array:5 [ "name" => "9-2.png" "alt" => null "width" => "810" "height" => 255 "path" => "/media/fizika_08/Peryshkin-u23/0-lab/9-2.webp?ts=1738081089" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 1 => App\Models\Element {#1072 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 746752 "created_at" => "2026-04-10 13:58:26" "updated_at" => null 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Illuminate\Database\Eloquent\Collection {#1089 #items: array:1 [ 0 => App\Models\Edition {#1090 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 5406 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 4" "field_order" => "5" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1091 #items: array:1 [ 0 => App\Models\Term {#1092 …30} ] #escapeWhenCastingToString: false } "field_content_type" => "free" "field_content_mode" => "text" "field_page_content_mode" => "" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Gemini 2.5 Pro" "field_moderator" => "tolik" "field_edition_type" => "solution" "field_root_dir" => "4-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1093 #items: [] #escapeWhenCastingToString: false } "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1094 #items: [] #escapeWhenCastingToString: false } "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1095 #items: [] #escapeWhenCastingToString: false } "field_content_source" => null ] #original: array:21 [ "id" => 5406 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 4" "field_order" => "5" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1091} "field_content_type" => "free" "field_content_mode" => "text" "field_page_content_mode" => "" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Gemini 2.5 Pro" "field_moderator" => "tolik" "field_edition_type" => "solution" "field_root_dir" => "4-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1093} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1094} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1095} "field_content_source" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "599437" "type" => "task" ] "text" => "<p><strong>1.</strong> Начертите схему электрической цепи последовательного соединения источника тока, ключа и лампы. Добавьте в схему амперметр и вольтметр так, чтобы они измеряли силу тока в цепи и напряжение на лампе.</p><p>Схема электрической цепи для выполнения данной лабораторной работы состоит из последовательно соединенных источника тока, ключа, амперметра и электрической лампы. Амперметр включается в цепь последовательно для измерения силы тока, протекающего через лампу. Вольтметр подключается параллельно к выводам лампы для измерения напряжения на ней.</p><p><strong>2.</strong> Соберите электрическую цепь по схеме.</p><p>Электрическая цепь собирается в соответствии с начерченной на первом этапе схемой. Необходимо строго соблюдать полярность при подключении амперметра, вольтметра и источника питания.</p><p><strong>3.</strong> Измерьте силу тока в цепи и напряжение на лампе.</p><p>После сборки цепи замыкаем ключ и с помощью измерительных приборов снимаем показания. Предположим, что в результате измерений были получены следующие значения:</p><ul><li>Сила тока: $I = 0.4$ А</li><li>Напряжение: $U = 3.6$ В</li></ul><p><strong>4.</strong> Обработка результатов измерений. Результаты прямых измерений с учётом абсолютной погрешности, равной цене деления шкалы прибора, и вычислений записывайте в таблицу 19.</p><p>Абсолютная погрешность измерений принимается равной цене деления шкалы прибора. Допустим, для используемых приборов:</p><ul><li>Цена деления амперметра: $C_I = 0.02$ А, следовательно, погрешность $\Delta I = 0.02$ А.</li><li>Цена деления вольтметра: $C_U = 0.1$ В, следовательно, погрешность $\Delta U = 0.1$ В.</li></ul><p>Результаты прямых измерений с учетом погрешности:</p><p>$I = (0.40 \pm 0.02)$ А</p><p>$U = (3.6 \pm 0.1)$ В</p><p>Дальнейшие расчеты и заполнение таблицы производятся на основе средних измеренных значений.</p><p><strong>5.</strong> Рассчитайте мощность электрического тока в лампе по измеренным значениям силы тока и напряжения.</p><p><strong>Дано:</strong><br>$I = 0.40$ А<br>$U = 3.6$ В</p><p><strong>Найти:</strong><br>$P$ — мощность тока.</p><p><strong>Решение:</strong><br>Мощность электрического тока находится по формуле:<br>$P = U \cdot I$<br>Подставляем измеренные значения в формулу:<br>$P = 3.6 \text{ В} \cdot 0.40 \text{ А} = 1.44 \text{ Вт}$</p><p><strong>Ответ:</strong> мощность электрического тока в лампе составляет $1.44$ Вт.</p><p><strong>6.</strong> Измерьте время горения лампы и рассчитайте работу электрического тока в лампе.</p><p>С помощью часов измеряем время горения лампы. Предположим, время измерения составило 3 минуты.</p><p><strong>Дано:</strong><br>$P = 1.44$ Вт<br>$t = 3$ мин</p><p>Перевод в систему СИ:<br>$t = 3 \cdot 60 \text{ с} = 180 \text{ с}$</p><p><strong>Найти:</strong><br>$A$ — работа тока.</p><p><strong>Решение:</strong><br>Работа электрического тока вычисляется по формуле:<br>$A = P \cdot t$<br>Подставляем рассчитанное значение мощности и измеренное время:<br>$A = 1.44 \text{ Вт} \cdot 180 \text{ с} = 259.2 \text{ Дж}$</p><p><strong>Ответ:</strong> работа электрического тока в лампе за 180 секунд составила $259.2$ Дж.</p><p>Теперь заполним таблицу 19 на основе полученных данных.</p><table border="1" style="width:100%; border-collapse: collapse; text-align: center;"><thead><tr><th style="padding: 8px;">Сила тока<br>I, А</th><th style="padding: 8px;">Напряжение<br>U, В</th><th style="padding: 8px;">Мощность тока<br>P, Вт</th><th style="padding: 8px;">Время горения лампы<br>t, с</th><th style="padding: 8px;">Работа тока<br>A, Дж</th></tr></thead><tbody><tr><td style="padding: 8px;">0.40</td><td style="padding: 8px;">3.6</td><td style="padding: 8px;">1.44</td><td style="padding: 8px;">180</td><td style="padding: 8px;">259.2</td></tr></tbody></table><p><strong>7.</strong> Сделайте вывод.</p><p>В ходе лабораторной работы была измерена мощность, потребляемая электрической лампой, и работа, совершаемая электрическим током за определенный промежуток времени. На основании прямых измерений силы тока $I = (0.40 \pm 0.02)$ А и напряжения $U = (3.6 \pm 0.1)$ В была рассчитана мощность тока в лампе, которая составила $P = 1.44$ Вт. За время $t = 180$ с электрический ток в лампе совершил работу $A = 259.2$ Дж. Цель работы достигнута: были экспериментально определены мощность и работа электрического тока в лампе.</p>" ] #original: array:6 [ "id" => 1467242 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1089} "task" => array:2 [ "refs" => "599437" "type" => "task" ] "text" => "<p><strong>1.</strong> Начертите схему электрической цепи последовательного соединения источника тока, ключа и лампы. Добавьте в схему амперметр и вольтметр так, чтобы они измеряли силу тока в цепи и напряжение на лампе.</p><p>Схема электрической цепи для выполнения данной лабораторной работы состоит из последовательно соединенных источника тока, ключа, амперметра и электрической лампы. Амперметр включается в цепь последовательно для измерения силы тока, протекающего через лампу. Вольтметр подключается параллельно к выводам лампы для измерения напряжения на ней.</p><p><strong>2.</strong> Соберите электрическую цепь по схеме.</p><p>Электрическая цепь собирается в соответствии с начерченной на первом этапе схемой. Необходимо строго соблюдать полярность при подключении амперметра, вольтметра и источника питания.</p><p><strong>3.</strong> Измерьте силу тока в цепи и напряжение на лампе.</p><p>После сборки цепи замыкаем ключ и с помощью измерительных приборов снимаем показания. Предположим, что в результате измерений были получены следующие значения:</p><ul><li>Сила тока: $I = 0.4$ А</li><li>Напряжение: $U = 3.6$ В</li></ul><p><strong>4.</strong> Обработка результатов измерений. Результаты прямых измерений с учётом абсолютной погрешности, равной цене деления шкалы прибора, и вычислений записывайте в таблицу 19.</p><p>Абсолютная погрешность измерений принимается равной цене деления шкалы прибора. Допустим, для используемых приборов:</p><ul><li>Цена деления амперметра: $C_I = 0.02$ А, следовательно, погрешность $\Delta I = 0.02$ А.</li><li>Цена деления вольтметра: $C_U = 0.1$ В, следовательно, погрешность $\Delta U = 0.1$ В.</li></ul><p>Результаты прямых измерений с учетом погрешности:</p><p>$I = (0.40 \pm 0.02)$ А</p><p>$U = (3.6 \pm 0.1)$ В</p><p>Дальнейшие расчеты и заполнение таблицы производятся на основе средних измеренных значений.</p><p><strong>5.</strong> Рассчитайте мощность электрического тока в лампе по измеренным значениям силы тока и напряжения.</p><p><strong>Дано:</strong><br>$I = 0.40$ А<br>$U = 3.6$ В</p><p><strong>Найти:</strong><br>$P$ — мощность тока.</p><p><strong>Решение:</strong><br>Мощность электрического тока находится по формуле:<br>$P = U \cdot I$<br>Подставляем измеренные значения в формулу:<br>$P = 3.6 \text{ В} \cdot 0.40 \text{ А} = 1.44 \text{ Вт}$</p><p><strong>Ответ:</strong> мощность электрического тока в лампе составляет $1.44$ Вт.</p><p><strong>6.</strong> Измерьте время горения лампы и рассчитайте работу электрического тока в лампе.</p><p>С помощью часов измеряем время горения лампы. Предположим, время измерения составило 3 минуты.</p><p><strong>Дано:</strong><br>$P = 1.44$ Вт<br>$t = 3$ мин</p><p>Перевод в систему СИ:<br>$t = 3 \cdot 60 \text{ с} = 180 \text{ с}$</p><p><strong>Найти:</strong><br>$A$ — работа тока.</p><p><strong>Решение:</strong><br>Работа электрического тока вычисляется по формуле:<br>$A = P \cdot t$<br>Подставляем рассчитанное значение мощности и измеренное время:<br>$A = 1.44 \text{ Вт} \cdot 180 \text{ с} = 259.2 \text{ Дж}$</p><p><strong>Ответ:</strong> работа электрического тока в лампе за 180 секунд составила $259.2$ Дж.</p><p>Теперь заполним таблицу 19 на основе полученных данных.</p><table border="1" style="width:100%; border-collapse: collapse; text-align: center;"><thead><tr><th style="padding: 8px;">Сила тока<br>I, А</th><th style="padding: 8px;">Напряжение<br>U, В</th><th style="padding: 8px;">Мощность тока<br>P, Вт</th><th style="padding: 8px;">Время горения лампы<br>t, с</th><th style="padding: 8px;">Работа тока<br>A, Дж</th></tr></thead><tbody><tr><td style="padding: 8px;">0.40</td><td style="padding: 8px;">3.6</td><td style="padding: 8px;">1.44</td><td style="padding: 8px;">180</td><td style="padding: 8px;">259.2</td></tr></tbody></table><p><strong>7.</strong> Сделайте вывод.</p><p>В ходе лабораторной работы была измерена мощность, потребляемая электрической лампой, и работа, совершаемая электрическим током за определенный промежуток времени. На основании прямых измерений силы тока $I = (0.40 \pm 0.02)$ А и напряжения $U = (3.6 \pm 0.1)$ В была рассчитана мощность тока в лампе, которая составила $P = 1.44$ Вт. За время $t = 180$ с электрический ток в лампе совершил работу $A = 259.2$ Дж. Цель работы достигнута: были экспериментально определены мощность и работа электрического тока в лампе.</p>" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "599438" "type" => "task" ] "previous" => array:2 [ "refs" => "599436" "type" => "task" ] "book" => Illuminate\Database\Eloquent\Collection {#1096 #items: array:1 [ 0 => App\Models\Book {#1097 #connection: "mysql" #table: "books" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:50 [ "id" => 51 "created_at" => "2026-04-10 13:58:26" "updated_at" => null 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null "name" => "переработанное" "field_cases" => array:6 [ "field_accusative_case" => null "field_creative_case" => null "field_dative_case" => null "field_genitive_case" => null "field_nominative_case" => null "field_prepositional_case" => null ] "field_translit" => "pererabotannoe" ] #original: array:6 [ "id" => 34 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "переработанное" "field_cases" => array:6 [ "field_accusative_case" => null "field_creative_case" => null "field_dative_case" => null "field_genitive_case" => null "field_nominative_case" => null "field_prepositional_case" => null ] "field_translit" => "pererabotannoe" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1121 #items: [] #escapeWhenCastingToString: false } "field_under_the_edition_degree" => null "field_cover_description" => "с градусником" "field_publication_year" => "2023" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => null "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => null "field_link_to_source" => null "field_tasks_count" => "706" "field_priority" => "2" "field_default_folder" => "/fizika_08/Peryshkin-u23/" "field_isbn" => "978-5-09-102555-2" "field_cover" => array:1 [ 0 => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" "alt" => "" "width" => "1350" "height" => "1772" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1122 #items: [] #escapeWhenCastingToString: false } "field_new_book" => Illuminate\Database\Eloquent\Collection {#1123 #items: [] #escapeWhenCastingToString: false } "field_old_book" => Illuminate\Database\Eloquent\Collection {#1124 #items: [] #escapeWhenCastingToString: false } "field_url" => "/8-klass/fizika/peryshkin-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1125 #items: array:1 [ 0 => App\Models\Term {#1126 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 45 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "белый" "field_cases" => array:6 [ "field_accusative_case" => "белый" "field_creative_case" => "белым" "field_dative_case" => "белому" "field_genitive_case" => "белого" "field_nominative_case" => "белый" "field_prepositional_case" => "белом" ] "field_translit" => "belyy" ] #original: array:6 [ "id" => 45 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "белый" "field_cases" => array:6 [ "field_accusative_case" => "белый" "field_creative_case" => "белым" "field_dative_case" => "белому" "field_genitive_case" => "белого" "field_nominative_case" => "белый" "field_prepositional_case" => "белом" ] "field_translit" => "belyy" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ "class" => 379 "subject" => 556 "class_subject" => 492 ] ] #original: array:50 [ "id" => 51 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1098} "field_class" => Illuminate\Database\Eloquent\Collection {#1100} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1102} "field_author" => Illuminate\Database\Eloquent\Collection {#1104} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1106} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1107} "field_country" => Illuminate\Database\Eloquent\Collection {#1109} "field_city" => Illuminate\Database\Eloquent\Collection {#1111} "field_series" => Illuminate\Database\Eloquent\Collection {#1113} "field_umk" => Illuminate\Database\Eloquent\Collection {#1114} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1115} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1117} "field_publication_number" => "3" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1119} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1121} "field_under_the_edition_degree" => null "field_cover_description" => "с градусником" "field_publication_year" => "2023" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => null "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => null "field_link_to_source" => null "field_tasks_count" => "706" "field_priority" => "2" "field_default_folder" => "/fizika_08/Peryshkin-u23/" "field_isbn" => "978-5-09-102555-2" "field_cover" => array:1 [ 0 => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" "alt" => "" "width" => "1350" "height" => "1772" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1122} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1123} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1124} "field_url" => "/8-klass/fizika/peryshkin-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1125} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ "class" => 379 "subject" => 556 "class_subject" => 492 ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "page" => Illuminate\Database\Eloquent\Collection {#1269 #items: array:1 [ 0 => App\Models\BookPage {#1134 #connection: "mysql" #table: "book_pages" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 991602 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "238" "field_url" => "/8-klass/fizika/peryshkin-uchebnik/page-238" "field_display_title" => "238" "field_folder" => "1" "field_image_name" => "238" "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1143 #items: [] #escapeWhenCastingToString: false } "field_weight" => "0" "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1142 #items: array:1 [ 0 => App\Models\Book {#1144 #connection: "mysql" #table: "books" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:50 [ "id" => 51 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1145 #items: array:1 [ 0 => App\Models\Term {#1146 …30} ] #escapeWhenCastingToString: false } "field_class" => Illuminate\Database\Eloquent\Collection {#1147 #items: array:1 [ 0 => App\Models\Term {#1148 …30} ] #escapeWhenCastingToString: false } "field_publisher" => Illuminate\Database\Eloquent\Collection {#1149 #items: array:1 [ 0 => App\Models\Term {#1150 …30} ] #escapeWhenCastingToString: false } "field_author" => Illuminate\Database\Eloquent\Collection {#1151 #items: array:1 [ 0 => App\Models\Term {#1152 …30} ] #escapeWhenCastingToString: false } "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1153 #items: [] #escapeWhenCastingToString: false } "field_book_type" => Illuminate\Database\Eloquent\Collection {#1154 #items: array:1 [ 0 => App\Models\Term {#1155 …30} ] #escapeWhenCastingToString: false } "field_country" => Illuminate\Database\Eloquent\Collection {#1156 #items: array:1 [ 0 => App\Models\Term {#1157 …30} ] #escapeWhenCastingToString: false } "field_city" => Illuminate\Database\Eloquent\Collection {#1158 #items: array:1 [ 0 => App\Models\Term {#1159 …30} ] #escapeWhenCastingToString: false } "field_series" => Illuminate\Database\Eloquent\Collection {#1160 #items: [] #escapeWhenCastingToString: false } "field_umk" => Illuminate\Database\Eloquent\Collection {#1161 #items: [] #escapeWhenCastingToString: false } "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1162 #items: array:1 [ 0 => App\Models\Term {#1163 …30} ] #escapeWhenCastingToString: false } "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1164 #items: array:1 [ 0 => App\Models\Term {#1165 …30} ] #escapeWhenCastingToString: false } "field_publication_number" => "3" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1166 #items: array:1 [ 0 => App\Models\Term {#1167 …30} ] #escapeWhenCastingToString: false } "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1168 #items: [] #escapeWhenCastingToString: false } "field_under_the_edition_degree" => null "field_cover_description" => "с градусником" "field_publication_year" => "2023" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => null "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => null "field_link_to_source" => null "field_tasks_count" => "706" "field_priority" => "2" "field_default_folder" => "/fizika_08/Peryshkin-u23/" "field_isbn" => "978-5-09-102555-2" "field_cover" => array:1 [ 0 => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" "alt" => "" "width" => "1350" "height" => "1772" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1169 #items: [] #escapeWhenCastingToString: false } "field_new_book" => Illuminate\Database\Eloquent\Collection {#1170 #items: [] #escapeWhenCastingToString: false } "field_old_book" => Illuminate\Database\Eloquent\Collection {#1171 #items: [] #escapeWhenCastingToString: false } "field_url" => "/8-klass/fizika/peryshkin-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1172 #items: array:1 [ 0 => App\Models\Term {#1173 …30} ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ "class" => 379 "subject" => 556 "class_subject" => 492 ] ] #original: array:50 [ "id" => 51 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1145} "field_class" => Illuminate\Database\Eloquent\Collection {#1147} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1149} "field_author" => Illuminate\Database\Eloquent\Collection {#1151} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1153} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1154} "field_country" => Illuminate\Database\Eloquent\Collection {#1156} "field_city" => Illuminate\Database\Eloquent\Collection {#1158} "field_series" => Illuminate\Database\Eloquent\Collection {#1160} "field_umk" => Illuminate\Database\Eloquent\Collection {#1161} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1162} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1164} "field_publication_number" => "3" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1166} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1168} "field_under_the_edition_degree" => null "field_cover_description" => "с градусником" "field_publication_year" => "2023" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => null "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => null "field_link_to_source" => null "field_tasks_count" => "706" "field_priority" => "2" "field_default_folder" => "/fizika_08/Peryshkin-u23/" "field_isbn" => "978-5-09-102555-2" "field_cover" => array:1 [ 0 => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/fizika_08/Peryshkin-u23/covers/cover1.webp?ts=1737917825" "alt" => "" "width" => "1350" "height" => "1772" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1169} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1170} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1171} "field_url" => "/8-klass/fizika/peryshkin-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1172} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ "class" => 379 "subject" => 556 "class_subject" => 492 ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "edition_groups" => Illuminate\Database\Eloquent\Collection {#1174 #items: [] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1175 #items: array:1 [ 0 => App\Models\Element {#1176 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 1173262 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1177 #items: array:1 [ 0 => App\Models\Edition {#1178 …30} ] #escapeWhenCastingToString: false } "book_page" => array:2 [ "refs" => "991602" "type" => "book_page" ] "img" => array:1 [ 0 => array:5 [ "name" => "238-1.jpg" "alt" => null "width" => "1046" "height" => 1311 "path" => "/media/fizika_08/Peryshkin-u23/0-1/238-1.webp?ts=1747029222" ] ] ] #original: array:6 [ "id" => 1173262 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1177} "book_page" => array:2 [ "refs" => "991602" "type" => "book_page" ] "img" => array:1 [ 0 => array:5 [ "name" => "238-1.jpg" "alt" => null "width" => "1046" "height" => 1311 "path" => "/media/fizika_08/Peryshkin-u23/0-1/238-1.webp?ts=1747029222" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "991603" "type" => "book_page" ] "previous" => array:2 [ "refs" => "991601" "type" => "book_page" ] "tasks" => Illuminate\Database\Eloquent\Collection {#1184 #items: array:2 [ 0 => App\Models\Task {#1185 #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 599436 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "237" "field_page_end" => "238" "field_url" => "/8-klass/fizika/peryshkin-uchebnik/lab-8" "field_display_title" => "Лабораторная работа №8" "field_outside_task" => "0" "field_task_type" => Illuminate\Database\Eloquent\Collection {#1186 #items: [] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1187 #items: [] #escapeWhenCastingToString: false } "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1188 #items: array:1 [ 0 => App\Models\Branch {#1189 …30} ] #escapeWhenCastingToString: false } "parent_branches" => Illuminate\Database\Eloquent\Collection {#1223 #items: array:1 [ 0 => App\Models\Branch {#1189 …30} ] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1224 #items: array:4 [ 0 => App\Models\Element {#1225 …30} 1 => App\Models\Element {#1227 …30} 2 => App\Models\Element {#1235 …30} 3 => App\Models\Element {#1243 …30} ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "599437" "type" => "task" ] "previous" => array:2 [ "refs" => "599435" "type" => "task" ] "book" => Illuminate\Database\Eloquent\Collection {#1251 #items: array:1 [ 0 => App\Models\Book {#1144} ] #escapeWhenCastingToString: false } "page" => array:2 [ "refs" => "991601" "type" => "book_page" ] ] #original: array:24 [ "id" => 599436 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "237" "field_page_end" => "238" "field_url" => "/8-klass/fizika/peryshkin-uchebnik/lab-8" "field_display_title" => "Лабораторная работа №8" "field_outside_task" => "0" "field_task_type" => Illuminate\Database\Eloquent\Collection {#1186} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1187} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1188} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1223} "content" => Illuminate\Database\Eloquent\Collection {#1224} "next" => array:2 [ "refs" => "599437" "type" => "task" ] "previous" => array:2 [ "refs" => "599435" "type" => "task" ] "book" => Illuminate\Database\Eloquent\Collection {#1251} "page" => array:2 [ "refs" => "991601" "type" => "book_page" ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 1 => App\Models\Task {#1252 #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 599437 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "238" "field_page_end" => "239" "field_url" => "/8-klass/fizika/peryshkin-uchebnik/lab-9" "field_display_title" => "Лабораторная работа №9" "field_outside_task" => "0" "field_task_type" => Illuminate\Database\Eloquent\Collection {#1253 #items: [] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1254 #items: [] #escapeWhenCastingToString: false } "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1255 #items: array:1 [ 0 => App\Models\Branch {#1189 …30} ] #escapeWhenCastingToString: false } "parent_branches" => Illuminate\Database\Eloquent\Collection {#1256 #items: array:1 [ 0 => App\Models\Branch {#1189 …30} ] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1257 #items: array:4 [ 0 => App\Models\Element {#1258 …30} 1 => App\Models\Element {#1260 …30} 2 => App\Models\Element {#1262 …30} 3 => App\Models\Element {#1264 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Лабораторная работа №9 (с. 238)
Условие. Лабораторная работа №9 (с. 238)
скриншот условия
№ 9 Измерение мощности и работы тока в электрической лампе
Цель работы Измерить мощность и работу электрического тока в электрической лампе.
Приборы и материалы Лабораторный источник питания (ЛИП), лампа на подставке, ключ, амперметр, вольтметр, часы, соединительные провода.
Указания к работе
1. Начертите схему электрической цепи последовательного соединения источника тока, ключа и лампы. Добавьте в схему амперметр и вольтметр так, чтобы они измеряли силу тока в цепи и напряжение на лампе.
2. Соберите электрическую цепь по схеме.
3. Измерьте силу тока в цепи и напряжение на лампе.
4. Обработка результатов измерений. Результаты прямых измерений с учётом абсолютной погрешности, равной цене деления шкалы прибора, и вычислений записывайте в таблицу 19.
5. Рассчитайте мощность электрического тока в лампе по измеренным значениям силы тока и напряжения.
6. Измерьте время горения лампы и рассчитайте работу электрического тока в лампе.
7. Сделайте вывод.
Решение 1. Лабораторная работа №9 (с. 238)
Решение 3. Лабораторная работа №9 (с. 238)
Решение 4. Лабораторная работа №9 (с. 238)
1. Начертите схему электрической цепи последовательного соединения источника тока, ключа и лампы. Добавьте в схему амперметр и вольтметр так, чтобы они измеряли силу тока в цепи и напряжение на лампе.
Схема электрической цепи для выполнения данной лабораторной работы состоит из последовательно соединенных источника тока, ключа, амперметра и электрической лампы. Амперметр включается в цепь последовательно для измерения силы тока, протекающего через лампу. Вольтметр подключается параллельно к выводам лампы для измерения напряжения на ней.
2. Соберите электрическую цепь по схеме.
Электрическая цепь собирается в соответствии с начерченной на первом этапе схемой. Необходимо строго соблюдать полярность при подключении амперметра, вольтметра и источника питания.
3. Измерьте силу тока в цепи и напряжение на лампе.
После сборки цепи замыкаем ключ и с помощью измерительных приборов снимаем показания. Предположим, что в результате измерений были получены следующие значения:
- Сила тока: $I = 0.4$ А
- Напряжение: $U = 3.6$ В
4. Обработка результатов измерений. Результаты прямых измерений с учётом абсолютной погрешности, равной цене деления шкалы прибора, и вычислений записывайте в таблицу 19.
Абсолютная погрешность измерений принимается равной цене деления шкалы прибора. Допустим, для используемых приборов:
- Цена деления амперметра: $C_I = 0.02$ А, следовательно, погрешность $\Delta I = 0.02$ А.
- Цена деления вольтметра: $C_U = 0.1$ В, следовательно, погрешность $\Delta U = 0.1$ В.
Результаты прямых измерений с учетом погрешности:
$I = (0.40 \pm 0.02)$ А
$U = (3.6 \pm 0.1)$ В
Дальнейшие расчеты и заполнение таблицы производятся на основе средних измеренных значений.
5. Рассчитайте мощность электрического тока в лампе по измеренным значениям силы тока и напряжения.
Дано:
$I = 0.40$ А
$U = 3.6$ В
Найти:
$P$ — мощность тока.
Решение:
Мощность электрического тока находится по формуле:
$P = U \cdot I$
Подставляем измеренные значения в формулу:
$P = 3.6 \text{ В} \cdot 0.40 \text{ А} = 1.44 \text{ Вт}$
Ответ: мощность электрического тока в лампе составляет $1.44$ Вт.
6. Измерьте время горения лампы и рассчитайте работу электрического тока в лампе.
С помощью часов измеряем время горения лампы. Предположим, время измерения составило 3 минуты.
Дано:
$P = 1.44$ Вт
$t = 3$ мин
Перевод в систему СИ:
$t = 3 \cdot 60 \text{ с} = 180 \text{ с}$
Найти:
$A$ — работа тока.
Решение:
Работа электрического тока вычисляется по формуле:
$A = P \cdot t$
Подставляем рассчитанное значение мощности и измеренное время:
$A = 1.44 \text{ Вт} \cdot 180 \text{ с} = 259.2 \text{ Дж}$
Ответ: работа электрического тока в лампе за 180 секунд составила $259.2$ Дж.
Теперь заполним таблицу 19 на основе полученных данных.
| Сила тока I, А | Напряжение U, В | Мощность тока P, Вт | Время горения лампы t, с | Работа тока A, Дж |
|---|---|---|---|---|
| 0.40 | 3.6 | 1.44 | 180 | 259.2 |
7. Сделайте вывод.
В ходе лабораторной работы была измерена мощность, потребляемая электрической лампой, и работа, совершаемая электрическим током за определенный промежуток времени. На основании прямых измерений силы тока $I = (0.40 \pm 0.02)$ А и напряжения $U = (3.6 \pm 0.1)$ В была рассчитана мощность тока в лампе, которая составила $P = 1.44$ Вт. За время $t = 180$ с электрический ток в лампе совершил работу $A = 259.2$ Дж. Цель работы достигнута: были экспериментально определены мощность и работа электрического тока в лампе.
Другие задания:
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