Номер 1, страница 463 - гдз по физике 10 класс учебник Касьянов

Физика, 10 класс Учебник, автор: Касьянов Валерий Алексеевич, издательство Просвещение, Москва, 2021, белого цвета

Авторы: Касьянов В. А.

Тип: Учебник

Издательство: Просвещение

Год издания: 2021 - 2026

Уровень обучения: углублённый

Цвет обложки: белый самолет и молнии изображены

ISBN: 978-5-09-103621-3

Лабораторные работы. 9. Измерение электроёмкости конденсатора - номер 1, страница 463.

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            "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 {#1150
              #items: array:1 [
                0 => App\Models\Book {#1118
                  #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" => 7000
                    "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 {#1120
                      #items: array:1 [
                        0 => App\Models\Term {#1119
                          #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 [
                            "id" => 6493
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Физика"
                            "field_abbreviated_name" => null
                            "field_cases" => array:6 [
                              "field_accusative_case" => "физику"
                              "field_creative_case" => "физикой"
                              "field_dative_case" => "физике"
                              "field_genitive_case" => "физики"
                              "field_nominative_case" => "физика"
                              "field_prepositional_case" => "физике"
                            ]
                            "field_foreign_lang_name" => null
                            "field_short_name" => null
                            "field_subject_type" => "technical_subject"
                            "field_translit" => "fizika"
                          ]
                          #original: array:10 [
                            "id" => 6493
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Физика"
                            "field_abbreviated_name" => null
                            "field_cases" => array:6 [
                              "field_accusative_case" => "физику"
                              "field_creative_case" => "физикой"
                              "field_dative_case" => "физике"
                              "field_genitive_case" => "физики"
                              "field_nominative_case" => "физика"
                              "field_prepositional_case" => "физике"
                            ]
                            "field_foreign_lang_name" => null
                            "field_short_name" => null
                            "field_subject_type" => "technical_subject"
                            "field_translit" => "fizika"
                          ]
                          #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_class" => Illuminate\Database\Eloquent\Collection {#1121
                      #items: array:1 [
                        0 => App\Models\Term {#1122
                          #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" => 5459
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "10"
                            "field_cases" => array:6 [
                              "field_accusative_case" => "десятый"
                              "field_creative_case" => "десятым"
                              "field_dative_case" => "десятому"
                              "field_genitive_case" => "десятого"
                              "field_nominative_case" => "десятый"
                              "field_prepositional_case" => "десятом"
                            ]
                            "field_translit" => "desjatyj"
                          ]
                          #original: array:6 [
                            "id" => 5459
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "10"
                            "field_cases" => array:6 [
                              "field_accusative_case" => "десятый"
                              "field_creative_case" => "десятым"
                              "field_dative_case" => "десятому"
                              "field_genitive_case" => "десятого"
                              "field_nominative_case" => "десятый"
                              "field_prepositional_case" => "десятом"
                            ]
                            "field_translit" => "desjatyj"
                          ]
                          #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_publisher" => Illuminate\Database\Eloquent\Collection {#1123
                      #items: array:1 [
                        0 => App\Models\Term {#1124
                          #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" => 5153
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Просвещение"
                            "field_cases" => null
                            "field_translit" => "prosveschenie"
                          ]
                          #original: array:6 [
                            "id" => 5153
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Просвещение"
                            "field_cases" => null
                            "field_translit" => "prosveschenie"
                          ]
                          #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_author" => 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:12 [
                            "id" => 4566
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Касьянов"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Валерий"
                            "field_patronymic" => "Алексеевич"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 4566
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Касьянов"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Валерий"
                            "field_patronymic" => "Алексеевич"
                            "field_surname_rp" => 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
                    }
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1127
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1128
                      #items: array:1 [
                        0 => App\Models\Term {#1129
                          #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 [
                            "id" => 6671
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Учебник"
                            "field_book_type_foreign" => null
                            "field_cases" => array:6 [
                              "field_accusative_case" => "учебник"
                              "field_creative_case" => "учебником"
                              "field_dative_case" => "учебнику"
                              "field_genitive_case" => "учебника"
                              "field_nominative_case" => "учебник"
                              "field_prepositional_case" => "учебнике"
                            ]
                            "field_plural_form" => null
                            "field_short_name" => null
                            "field_short_name_foreign" => null
                            "field_translit" => "uchebnik"
                          ]
                          #original: array:10 [
                            "id" => 6671
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Учебник"
                            "field_book_type_foreign" => null
                            "field_cases" => array:6 [
                              "field_accusative_case" => "учебник"
                              "field_creative_case" => "учебником"
                              "field_dative_case" => "учебнику"
                              "field_genitive_case" => "учебника"
                              "field_nominative_case" => "учебник"
                              "field_prepositional_case" => "учебнике"
                            ]
                            "field_plural_form" => null
                            "field_short_name" => null
                            "field_short_name_foreign" => null
                            "field_translit" => "uchebnik"
                          ]
                          #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_country" => Illuminate\Database\Eloquent\Collection {#1130
                      #items: array:1 [
                        0 => App\Models\Term {#1131
                          #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" => 9
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Россия"
                            "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" => "rossiya"
                          ]
                          #original: array:6 [
                            "id" => 9
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Россия"
                            "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" => "rossiya"
                          ]
                          #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_city" => Illuminate\Database\Eloquent\Collection {#1132
                      #items: array:1 [
                        0 => App\Models\Term {#1133
                          #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" => 15
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Москва"
                            "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" => "moskva"
                          ]
                          #original: array:6 [
                            "id" => 15
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Москва"
                            "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" => "moskva"
                          ]
                          #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_series" => Illuminate\Database\Eloquent\Collection {#1134
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1135
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1136
                      #items: array:1 [
                        0 => App\Models\Term {#1137
                          #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" => 39
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "углублённый"
                            "field_cases" => array:6 [
                              "field_accusative_case" => "углубленный"
                              "field_creative_case" => "углубленным"
                              "field_dative_case" => "углубленному"
                              "field_genitive_case" => "углубленного"
                              "field_nominative_case" => "углубленный"
                              "field_prepositional_case" => "углубленном"
                            ]
                            "field_translit" => "uglublennyy"
                          ]
                          #original: array:6 [
                            "id" => 39
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "углублённый"
                            "field_cases" => array:6 [
                              "field_accusative_case" => "углубленный"
                              "field_creative_case" => "углубленным"
                              "field_dative_case" => "углубленному"
                              "field_genitive_case" => "углубленного"
                              "field_nominative_case" => "углубленный"
                              "field_prepositional_case" => "углубленном"
                            ]
                            "field_translit" => "uglublennyy"
                          ]
                          #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_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1138
                      #items: array:1 [
                        0 => App\Models\Term {#1139
                          #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 [
                            "id" => 6706
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "ФГОС (старый)"
                            "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_color" => null
                            "field_end_year" => "2022"
                            "field_start_year" => "2019"
                            "field_translit" => "fgos-old"
                            "field_type" => null
                          ]
                          #original: array:10 [
                            "id" => 6706
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "ФГОС (старый)"
                            "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_color" => null
                            "field_end_year" => "2022"
                            "field_start_year" => "2019"
                            "field_translit" => "fgos-old"
                            "field_type" => 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
                    }
                    "field_publication_number" => "11"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1140
                      #items: array:1 [
                        0 => App\Models\Term {#1141
                          #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" => 33
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "стереотипное"
                            "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" => "stereotipnoe"
                          ]
                          #original: array:6 [
                            "id" => 33
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "стереотипное"
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            "text" => "<p><strong>Лабораторная работа №9. Измерение электроёмкости конденсатора</strong></p><p>🟦 <strong>Цель работы:</strong> изучить устройство плоского конденсатора и рассчитать его электроёмкость; сконструировать бумажный конденсатор из фольги и проверить, возможно ли за счёт энергии, запасённой в нём, зажечь светодиод.</p><p>🟦 <strong>Оборудование, средства измерения:</strong> 1) пластинки металлические — 2 шт., 2) пластинка стеклянная, 3) штангенциркуль, 4) линейка измерительная, 5) батарейка квадратная (плоская), 6) зажим типа «крокодил» — 2 шт., 7) рулон фольги бытовой, 8) рулон бумаги (полотенце бумажное), 9) светодиод.</p><p>🟦 <strong>Теоретическое обоснование</strong></p><p>Электрическая ёмкость конденсатора — физическая величина, равная отношению заряда одного из проводников к разности потенциалов между этим проводником и соседним:</p><p>$C = \frac{Q}{U}$ (1)</p><p>В работе измеряется электроёмкость плоского конденсатора — система двух плоскопараллельных пластин 1 площадью S, находящихся на расстоянии d друг от друга (рис. 360).</p><p>Пространство между пластинами заполнено диэлектриком с относительной диэлектрической проницаемостью $\varepsilon$ (вставлена стеклянная пластина 2 толщиной d).</p><p>Вычисление электроёмкости сводится к расчёту разности потенциалов U между пластинами. При напряжённости Е однородного электростатического поля между пластинами плоского конденсатора</p><p>$U = Ed,$ (2)</p><p>Напряжённость Е однородного поля внутри конденсатора складывается (по принципу суперпозиции) из напряжённостей полей, созданных положительной $E_+$ и отрицательной $E_-$ пластинами:</p><p>$E = E_+ + E_-,$ (3)</p><p>В свою очередь, в среде с относительной диэлектрической проницаемостью $\varepsilon$</p><p>$E_+ = \frac{Q}{2S\varepsilon\varepsilon_0},$ (4)</p><p>где $\varepsilon_0 = 8,85 \cdot 10^{-12} \frac{Кл^2}{Н \cdot м^2}$ — электрическая постоянная.</p><p>Следовательно, разность потенциалов между пластинами плоского конденсатора:</p><p>$U = \frac{Qd}{S\varepsilon\varepsilon_0}.$ (5)</p><p>Подставляя значение U в формулу (1), находим электроёмкость плоского конденсатора с диэлектриком:</p><p>$C = \frac{S\varepsilon\varepsilon_0}{d}.$ (6)</p><p>Электроёмкость конденсатора зависит как от его геометрических характеристик (площади пластин, расстояния между ними), так и от относительной диэлектрической проницаемости вещества, заполняющего пространство между пластинами. Электроёмкость не зависит от заряда на пластинах и разности потенциалов, приложенной к ним.</p><p>🟦 <strong>Порядок выполнения работы</strong></p><p><strong>1.</strong> Соберите из двух металлических пластин и одной стеклянной (см. рис. 360) плоский конденсатор.</p>"
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            "text" => "<p><strong>Лабораторная работа №9. Измерение электроёмкости конденсатора</strong></p><p>🟦 <strong>Цель работы:</strong> изучить устройство плоского конденсатора и рассчитать его электроёмкость; сконструировать бумажный конденсатор из фольги и проверить, возможно ли за счёт энергии, запасённой в нём, зажечь светодиод.</p><p>🟦 <strong>Оборудование, средства измерения:</strong> 1) пластинки металлические — 2 шт., 2) пластинка стеклянная, 3) штангенциркуль, 4) линейка измерительная, 5) батарейка квадратная (плоская), 6) зажим типа «крокодил» — 2 шт., 7) рулон фольги бытовой, 8) рулон бумаги (полотенце бумажное), 9) светодиод.</p><p>🟦 <strong>Теоретическое обоснование</strong></p><p>Электрическая ёмкость конденсатора — физическая величина, равная отношению заряда одного из проводников к разности потенциалов между этим проводником и соседним:</p><p>$C = \frac{Q}{U}$ (1)</p><p>В работе измеряется электроёмкость плоского конденсатора — система двух плоскопараллельных пластин 1 площадью S, находящихся на расстоянии d друг от друга (рис. 360).</p><p>Пространство между пластинами заполнено диэлектриком с относительной диэлектрической проницаемостью $\varepsilon$ (вставлена стеклянная пластина 2 толщиной d).</p><p>Вычисление электроёмкости сводится к расчёту разности потенциалов U между пластинами. При напряжённости Е однородного электростатического поля между пластинами плоского конденсатора</p><p>$U = Ed,$ (2)</p><p>Напряжённость Е однородного поля внутри конденсатора складывается (по принципу суперпозиции) из напряжённостей полей, созданных положительной $E_+$ и отрицательной $E_-$ пластинами:</p><p>$E = E_+ + E_-,$ (3)</p><p>В свою очередь, в среде с относительной диэлектрической проницаемостью $\varepsilon$</p><p>$E_+ = \frac{Q}{2S\varepsilon\varepsilon_0},$ (4)</p><p>где $\varepsilon_0 = 8,85 \cdot 10^{-12} \frac{Кл^2}{Н \cdot м^2}$ — электрическая постоянная.</p><p>Следовательно, разность потенциалов между пластинами плоского конденсатора:</p><p>$U = \frac{Qd}{S\varepsilon\varepsilon_0}.$ (5)</p><p>Подставляя значение U в формулу (1), находим электроёмкость плоского конденсатора с диэлектриком:</p><p>$C = \frac{S\varepsilon\varepsilon_0}{d}.$ (6)</p><p>Электроёмкость конденсатора зависит как от его геометрических характеристик (площади пластин, расстояния между ними), так и от относительной диэлектрической проницаемости вещества, заполняющего пространство между пластинами. Электроёмкость не зависит от заряда на пластинах и разности потенциалов, приложенной к ним.</p><p>🟦 <strong>Порядок выполнения работы</strong></p><p><strong>1.</strong> Соберите из двух металлических пластин и одной стеклянной (см. рис. 360) плоский конденсатор.</p>"
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            "text" => "<p><strong>1.</strong> Соберите из двух металлических пластин и одной стеклянной (см. рис. 360) плоский конденсатор.</p><p>Для сборки плоского конденсатора необходимо взять две идентичные металлические пластины, которые будут служить обкладками, и расположить их строго параллельно друг другу. Пространство между обкладками заполняется диэлектриком — в данном случае, стеклянной пластиной. Важно обеспечить плотное прилегание диэлектрика к обкладкам по всей их площади. В результате будет создано устройство, предназначенное для накопления электрического заряда, — плоский конденсатор.</p><p>После сборки конденсатора произведем расчёт его основной характеристики — электроёмкости. Для этого воспользуемся формулами из теоретического обоснования, а геометрические параметры определим по рисунку 360 и справочным данным.</p><p><strong>Дано:</strong></p><p>Длина пластины, $a = 10$ см (измерено по линейке на рис. 360).</p><p>Ширина пластины, $b = 10$ см (принято, что пластина квадратная).</p><p>Толщина стеклянной пластины (расстояние между обкладками), $d = 2.5$ мм (оценка по показаниям штангенциркуля на рис. 360).</p><p>Относительная диэлектрическая проницаемость стекла, $\epsilon \approx 7$ (справочное значение, так как в условии не указано).</p><p>Электрическая постоянная, $\epsilon_0 = 8.85 \cdot 10^{-12}$ Ф/м.</p><p>Перевод в систему СИ:</p><p>$a = 10 \text{ см} = 0.1 \text{ м}$</p><p>$b = 10 \text{ см} = 0.1 \text{ м}$</p><p>$d = 2.5 \text{ мм} = 2.5 \cdot 10^{-3} \text{ м}$</p><p><strong>Найти:</strong></p><p>Электроёмкость конденсатора, $C$.</p><p><strong>Решение:</strong></p><p>Согласно формуле (6) из теоретического обоснования, электроёмкость плоского конденсатора с диэлектриком определяется как:</p><p>$C = \frac{\epsilon \epsilon_0 S}{d}$</p><p>где $S$ — площадь перекрытия пластин конденсатора, $\epsilon$ — диэлектрическая проницаемость материала между пластинами, $\epsilon_0$ — электрическая постоянная, $d$ — расстояние между пластинами.</p><p><strong>1.</strong> Найдём площадь пластин конденсатора. Так как пластины полностью перекрывают друг друга, эта площадь равна площади одной пластины:</p><p>$S = a \cdot b = 0.1 \text{ м} \cdot 0.1 \text{ м} = 0.01 \text{ м}^2 = 10^{-2} \text{ м}^2$.</p><p><strong>2.</strong> Подставим числовые значения в формулу для расчёта электроёмкости:</p><p>$C = \frac{7 \cdot 8.85 \cdot 10^{-12} \text{ Ф/м} \cdot 10^{-2} \text{ м}^2}{2.5 \cdot 10^{-3} \text{ м}}$</p><p>Произведём вычисления:</p><p>$C = \frac{61.95 \cdot 10^{-14}}{2.5 \cdot 10^{-3}} \text{ Ф} = 24.78 \cdot 10^{-11} \text{ Ф}$.</p><p>Для удобства представим результат в пикофарадах (1 пФ = $10^{-12}$ Ф):</p><p>$C = 24.78 \cdot 10^{-11} \text{ Ф} = 247.8 \cdot 10^{-12} \text{ Ф} \approx 248 \text{ пФ}$.</p><p><strong>Ответ:</strong> электроёмкость собранного плоского конденсатора составляет приблизительно 248 пФ.</p>"
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            "text" => "<p><strong>1.</strong> Соберите из двух металлических пластин и одной стеклянной (см. рис. 360) плоский конденсатор.</p><p>Для сборки плоского конденсатора необходимо взять две идентичные металлические пластины, которые будут служить обкладками, и расположить их строго параллельно друг другу. Пространство между обкладками заполняется диэлектриком — в данном случае, стеклянной пластиной. Важно обеспечить плотное прилегание диэлектрика к обкладкам по всей их площади. В результате будет создано устройство, предназначенное для накопления электрического заряда, — плоский конденсатор.</p><p>После сборки конденсатора произведем расчёт его основной характеристики — электроёмкости. Для этого воспользуемся формулами из теоретического обоснования, а геометрические параметры определим по рисунку 360 и справочным данным.</p><p><strong>Дано:</strong></p><p>Длина пластины, $a = 10$ см (измерено по линейке на рис. 360).</p><p>Ширина пластины, $b = 10$ см (принято, что пластина квадратная).</p><p>Толщина стеклянной пластины (расстояние между обкладками), $d = 2.5$ мм (оценка по показаниям штангенциркуля на рис. 360).</p><p>Относительная диэлектрическая проницаемость стекла, $\epsilon \approx 7$ (справочное значение, так как в условии не указано).</p><p>Электрическая постоянная, $\epsilon_0 = 8.85 \cdot 10^{-12}$ Ф/м.</p><p>Перевод в систему СИ:</p><p>$a = 10 \text{ см} = 0.1 \text{ м}$</p><p>$b = 10 \text{ см} = 0.1 \text{ м}$</p><p>$d = 2.5 \text{ мм} = 2.5 \cdot 10^{-3} \text{ м}$</p><p><strong>Найти:</strong></p><p>Электроёмкость конденсатора, $C$.</p><p><strong>Решение:</strong></p><p>Согласно формуле (6) из теоретического обоснования, электроёмкость плоского конденсатора с диэлектриком определяется как:</p><p>$C = \frac{\epsilon \epsilon_0 S}{d}$</p><p>где $S$ — площадь перекрытия пластин конденсатора, $\epsilon$ — диэлектрическая проницаемость материала между пластинами, $\epsilon_0$ — электрическая постоянная, $d$ — расстояние между пластинами.</p><p><strong>1.</strong> Найдём площадь пластин конденсатора. Так как пластины полностью перекрывают друг друга, эта площадь равна площади одной пластины:</p><p>$S = a \cdot b = 0.1 \text{ м} \cdot 0.1 \text{ м} = 0.01 \text{ м}^2 = 10^{-2} \text{ м}^2$.</p><p><strong>2.</strong> Подставим числовые значения в формулу для расчёта электроёмкости:</p><p>$C = \frac{7 \cdot 8.85 \cdot 10^{-12} \text{ Ф/м} \cdot 10^{-2} \text{ м}^2}{2.5 \cdot 10^{-3} \text{ м}}$</p><p>Произведём вычисления:</p><p>$C = \frac{61.95 \cdot 10^{-14}}{2.5 \cdot 10^{-3}} \text{ Ф} = 24.78 \cdot 10^{-11} \text{ Ф}$.</p><p>Для удобства представим результат в пикофарадах (1 пФ = $10^{-12}$ Ф):</p><p>$C = 24.78 \cdot 10^{-11} \text{ Ф} = 247.8 \cdot 10^{-12} \text{ Ф} \approx 248 \text{ пФ}$.</p><p><strong>Ответ:</strong> электроёмкость собранного плоского конденсатора составляет приблизительно 248 пФ.</p>"
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№1 (с. 463)
Условие. №1 (с. 463)
скриншот условия
Физика, 10 класс Учебник, автор: Касьянов Валерий Алексеевич, издательство Просвещение, Москва, 2021, белого цвета, страница 463, номер 1, Условие
Физика, 10 класс Учебник, автор: Касьянов Валерий Алексеевич, издательство Просвещение, Москва, 2021, белого цвета, страница 463, номер 1, Условие (продолжение 2)

Лабораторная работа №9. Измерение электроёмкости конденсатора

🟦 Цель работы: изучить устройство плоского конденсатора и рассчитать его электроёмкость; сконструировать бумажный конденсатор из фольги и проверить, возможно ли за счёт энергии, запасённой в нём, зажечь светодиод.

🟦 Оборудование, средства измерения: 1) пластинки металлические — 2 шт., 2) пластинка стеклянная, 3) штангенциркуль, 4) линейка измерительная, 5) батарейка квадратная (плоская), 6) зажим типа «крокодил» — 2 шт., 7) рулон фольги бытовой, 8) рулон бумаги (полотенце бумажное), 9) светодиод.

🟦 Теоретическое обоснование

Электрическая ёмкость конденсатора — физическая величина, равная отношению заряда одного из проводников к разности потенциалов между этим проводником и соседним:

$C = \frac{Q}{U}$ (1)

В работе измеряется электроёмкость плоского конденсатора — система двух плоскопараллельных пластин 1 площадью S, находящихся на расстоянии d друг от друга (рис. 360).

Пространство между пластинами заполнено диэлектриком с относительной диэлектрической проницаемостью $\varepsilon$ (вставлена стеклянная пластина 2 толщиной d).

Вычисление электроёмкости сводится к расчёту разности потенциалов U между пластинами. При напряжённости Е однородного электростатического поля между пластинами плоского конденсатора

$U = Ed,$ (2)

Напряжённость Е однородного поля внутри конденсатора складывается (по принципу суперпозиции) из напряжённостей полей, созданных положительной $E_+$ и отрицательной $E_-$ пластинами:

$E = E_+ + E_-,$ (3)

В свою очередь, в среде с относительной диэлектрической проницаемостью $\varepsilon$

$E_+ = \frac{Q}{2S\varepsilon\varepsilon_0},$ (4)

где $\varepsilon_0 = 8,85 \cdot 10^{-12} \frac{Кл^2}{Н \cdot м^2}$ — электрическая постоянная.

Следовательно, разность потенциалов между пластинами плоского конденсатора:

$U = \frac{Qd}{S\varepsilon\varepsilon_0}.$ (5)

Подставляя значение U в формулу (1), находим электроёмкость плоского конденсатора с диэлектриком:

$C = \frac{S\varepsilon\varepsilon_0}{d}.$ (6)

Электроёмкость конденсатора зависит как от его геометрических характеристик (площади пластин, расстояния между ними), так и от относительной диэлектрической проницаемости вещества, заполняющего пространство между пластинами. Электроёмкость не зависит от заряда на пластинах и разности потенциалов, приложенной к ним.

🟦 Порядок выполнения работы

1. Соберите из двух металлических пластин и одной стеклянной (см. рис. 360) плоский конденсатор.

Решение. №1 (с. 463)

1. Соберите из двух металлических пластин и одной стеклянной (см. рис. 360) плоский конденсатор.

Для сборки плоского конденсатора необходимо взять две идентичные металлические пластины, которые будут служить обкладками, и расположить их строго параллельно друг другу. Пространство между обкладками заполняется диэлектриком — в данном случае, стеклянной пластиной. Важно обеспечить плотное прилегание диэлектрика к обкладкам по всей их площади. В результате будет создано устройство, предназначенное для накопления электрического заряда, — плоский конденсатор.

После сборки конденсатора произведем расчёт его основной характеристики — электроёмкости. Для этого воспользуемся формулами из теоретического обоснования, а геометрические параметры определим по рисунку 360 и справочным данным.

Дано:

Длина пластины, $a = 10$ см (измерено по линейке на рис. 360).

Ширина пластины, $b = 10$ см (принято, что пластина квадратная).

Толщина стеклянной пластины (расстояние между обкладками), $d = 2.5$ мм (оценка по показаниям штангенциркуля на рис. 360).

Относительная диэлектрическая проницаемость стекла, $\epsilon \approx 7$ (справочное значение, так как в условии не указано).

Электрическая постоянная, $\epsilon_0 = 8.85 \cdot 10^{-12}$ Ф/м.

Перевод в систему СИ:

$a = 10 \text{ см} = 0.1 \text{ м}$

$b = 10 \text{ см} = 0.1 \text{ м}$

$d = 2.5 \text{ мм} = 2.5 \cdot 10^{-3} \text{ м}$

Найти:

Электроёмкость конденсатора, $C$.

Решение:

Согласно формуле (6) из теоретического обоснования, электроёмкость плоского конденсатора с диэлектриком определяется как:

$C = \frac{\epsilon \epsilon_0 S}{d}$

где $S$ — площадь перекрытия пластин конденсатора, $\epsilon$ — диэлектрическая проницаемость материала между пластинами, $\epsilon_0$ — электрическая постоянная, $d$ — расстояние между пластинами.

1. Найдём площадь пластин конденсатора. Так как пластины полностью перекрывают друг друга, эта площадь равна площади одной пластины:

$S = a \cdot b = 0.1 \text{ м} \cdot 0.1 \text{ м} = 0.01 \text{ м}^2 = 10^{-2} \text{ м}^2$.

2. Подставим числовые значения в формулу для расчёта электроёмкости:

$C = \frac{7 \cdot 8.85 \cdot 10^{-12} \text{ Ф/м} \cdot 10^{-2} \text{ м}^2}{2.5 \cdot 10^{-3} \text{ м}}$

Произведём вычисления:

$C = \frac{61.95 \cdot 10^{-14}}{2.5 \cdot 10^{-3}} \text{ Ф} = 24.78 \cdot 10^{-11} \text{ Ф}$.

Для удобства представим результат в пикофарадах (1 пФ = $10^{-12}$ Ф):

$C = 24.78 \cdot 10^{-11} \text{ Ф} = 247.8 \cdot 10^{-12} \text{ Ф} \approx 248 \text{ пФ}$.

Ответ: электроёмкость собранного плоского конденсатора составляет приблизительно 248 пФ.

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