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Консультация № 200273
13.02.2021, 18:52
0.00 руб.
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1
Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
Вывести формулу и определить напряженность магнитного поля проводника в форме дуги окружности радиусом 20 см в центре этой окружности. Длина дуги равна половине окружности, сила тока в проводнике 4А.
Вывести формулу и определить напряженность магнитного поля проводника в форме дуги окружности радиусом 20 см в центре этой окружности. Длина дуги равна половине окружности, сила тока в проводнике 4А.
Обсуждение
15.02.2021, 10:39
общий
это ответ
Здравствуйте, nadjatikvin!
Дано:
R=0,2 м
[$945$]=(0;[$960$])
I=4 A
Найти: H
Решение:
Согласно закону Био-Савара-Лапласа каждый элемент проводника dl, по которому протекает ток I, перпендикулярный радиус-вектору R (sin[$945$]=1), на расстоянии R от него создает поле с индукцией
dB=([$956$]o[$956$]/4[$960$])(I/R2)dl
Тогда
B=[$8747$]dB=
=([$956$]o[$956$]/4[$960$])(I/R2)[$8747$]dl=
=([$956$]o[$956$]I/4[$960$]R2)[$960$]R=
=([$956$]o[$956$]I)/4R
-------
B=([$956$]o[$956$]I)/4R (1)
H=B/[$956$]o (2)
Следовательно
H=[$956$]I/4R = 1*4/(4*0,2) = 5 А/м
Удачи
Дано:
R=0,2 м
[$945$]=(0;[$960$])
I=4 A
Найти: H
Решение:
Согласно закону Био-Савара-Лапласа каждый элемент проводника dl, по которому протекает ток I, перпендикулярный радиус-вектору R (sin[$945$]=1), на расстоянии R от него создает поле с индукцией
dB=([$956$]o[$956$]/4[$960$])(I/R2)dl
Тогда
B=[$8747$]dB=
=([$956$]o[$956$]/4[$960$])(I/R2)[$8747$]dl=
=([$956$]o[$956$]I/4[$960$]R2)[$960$]R=
=([$956$]o[$956$]I)/4R
-------
B=([$956$]o[$956$]I)/4R (1)
H=B/[$956$]o (2)
Следовательно
H=[$956$]I/4R = 1*4/(4*0,2) = 5 А/м
Удачи
5
Об авторе:
С уважением
shvetski
С уважением
shvetski
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