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Консультация № 193417
26.06.2018, 18:39
0.00 руб.
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Здравствуйте! Прошу помощи в следующем вопросе:
В железном сердечнике соленоида, содержащего 10 витков на 1 см
длины, индукция равна 1,3 Тл. Железный сердечник заменили стальным.
Определить, во сколько раз следует изменить силу тока в обмотке соленоида,
чтобы индукция в сердечнике осталась неизменной.
В железном сердечнике соленоида, содержащего 10 витков на 1 см
длины, индукция равна 1,3 Тл. Железный сердечник заменили стальным.
Определить, во сколько раз следует изменить силу тока в обмотке соленоида,
чтобы индукция в сердечнике осталась неизменной.
Обсуждение
28.06.2018, 15:46
общий
это ответ
Здравствуйте, 4ekost@gmail.com!
По-моему, задачу можно решить так. В соответствии с графиками зависимости
для железа и стали, показанными в прикреплённом файле, индукции 
Тл соответствуют напряжённость 
А/м магнитного поля в железном сердечнике и напряжённость 
А/м магнитного поля в стальном сердечнике.
Поскольку
где 
-- число витков на единицу длины соленоида, 
-- сила тока в обмотке соленоида, постольку
то есть силу тока нужно увеличить в два раза.
По-моему, задачу можно решить так. В соответствии с графиками зависимости
для железа и стали, показанными в прикреплённом файле, индукции Тл соответствуют напряжённость А/м магнитного поля в железном сердечнике и напряжённость А/м магнитного поля в стальном сердечнике.Поскольку
где -- число витков на единицу длины соленоида, -- сила тока в обмотке соленоида, постолькуто есть силу тока нужно увеличить в два раза.
Прикрепленные файлы:
5
Об авторе:
Facta loquuntur.
Facta loquuntur.
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