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Консультация № 161209
23.02.2009, 17:56
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Здравствуйте уважаемые эксперты!!!
Очень Вас прошу, ПОЖАЛУЙСТА, помогите решить задачу.
Тонкий провод длиной L=20 см изогнут в виде полукольца и помещен в магнитное поле (В=10 мТл) так, что площадь полукольца перпендикулярна линиям магнитной индукции. По проводу пропустили ток I= 50 А. Определить силу F, действующую на провод. Проводящие провода направлены вдоль линий магнитной индукции.
Я заранее хочу сказать огромное спасибо за помощь, благодарю Вас, Вы меня спасаете!!!
Очень Вас прошу, ПОЖАЛУЙСТА, помогите решить задачу.
Тонкий провод длиной L=20 см изогнут в виде полукольца и помещен в магнитное поле (В=10 мТл) так, что площадь полукольца перпендикулярна линиям магнитной индукции. По проводу пропустили ток I= 50 А. Определить силу F, действующую на провод. Проводящие провода направлены вдоль линий магнитной индукции.
Я заранее хочу сказать огромное спасибо за помощь, благодарю Вас, Вы меня спасаете!!!
Обсуждение
Неизвестный
23.02.2009, 19:51
общий
это ответ
Здравствуйте, Улитина Наталья Владимировна!
Формула для расчёта выглядит следующим образом: dF = I * [dl, B] , где dF - сила, действующая на кусочек провода длиной dl, по которому течёт ток I cо стороны магнитного поля с индукцией B, квадратные скобки означают векторное произведение.
F = //интеграл от 0 до L// I*B*sin(pi*l/L) dl = I*B*(L/pi) * //интеграл от 0 до L// sin(pi*l/L) d(pi*l/L) = I*B*L*2/pi = 0,064 (Н).
sin(pi*l/L) возникает из векторного произведения из-за того, что у нас полукольцо.
Формула для расчёта выглядит следующим образом: dF = I * [dl, B] , где dF - сила, действующая на кусочек провода длиной dl, по которому течёт ток I cо стороны магнитного поля с индукцией B, квадратные скобки означают векторное произведение.
F = //интеграл от 0 до L// I*B*sin(pi*l/L) dl = I*B*(L/pi) * //интеграл от 0 до L// sin(pi*l/L) d(pi*l/L) = I*B*L*2/pi = 0,064 (Н).
sin(pi*l/L) возникает из векторного произведения из-за того, что у нас полукольцо.
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