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Консультация № 191383
26.09.2017, 18:00
0.00 руб.
0
1
1
Квадратная рамка со стороной 10 см помещена в магнитное поле с индукцией 0,1 Тл так, что
ее плоскость перпендикулярна линиям индукции. Про рамке течёт ток 20 А. Какую работу
надо совершить, чтобы удалить рамку из магнитного поля ?
ее плоскость перпендикулярна линиям индукции. Про рамке течёт ток 20 А. Какую работу
надо совершить, чтобы удалить рамку из магнитного поля ?
Обсуждение
27.09.2017, 04:30
общий
это ответ
Здравствуйте, AlexMSI!
Магнитный поток [$934$] через поверхность контура площадью S, помещённого в магнитное поле с индукцией B, определяется формулой
где [$945$] - угол между вектором магнитной индукции и нормалью к плоскости контура. В частности, если контур представляет собой квадратную рамку со стороной a и расположен перпендикулярно линиям индукции, то S = a[sup]2[/sup], [$945$] = 0 и
Если при перемещении или повороте контура магнитный поток изменяется на величину [$916$][$934$], то совершённая при этом работа равна
где I - сила тока в проводнике. При удалении контура из магнитного поля магнитный поток падает до нуля, то есть [$916$][$934$] = -[$934$] и
В данном случае I = 20 А, B = 0.1 Тл, a = 10 см = 0.1 м и работа удаления рамки из магнитного поля будет равна
Дж (знак "минус" означает, что работа была совершена внешними силами).
Магнитный поток [$934$] через поверхность контура площадью S, помещённого в магнитное поле с индукцией B, определяется формулой
где [$945$] - угол между вектором магнитной индукции и нормалью к плоскости контура. В частности, если контур представляет собой квадратную рамку со стороной a и расположен перпендикулярно линиям индукции, то S = a[sup]2[/sup], [$945$] = 0 и
Если при перемещении или повороте контура магнитный поток изменяется на величину [$916$][$934$], то совершённая при этом работа равна
где I - сила тока в проводнике. При удалении контура из магнитного поля магнитный поток падает до нуля, то есть [$916$][$934$] = -[$934$] и
В данном случае I = 20 А, B = 0.1 Тл, a = 10 см = 0.1 м и работа удаления рамки из магнитного поля будет равна
Дж (знак "минус" означает, что работа была совершена внешними силами).
5
Спасибо за помощь в задаче. Ответ был максимально быстро получен, в подробностях описано решение, спасибо огромное "мастеру-эксперту"
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