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Консультация № 197135
19.11.2019, 14:49
0.00 руб.
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1
1
Здравствуйте! Прошу помощи в следующем вопросе:
Магнитное поле бесконечного проводника:
По бесконечному прямому проводнику течет постоянный ток I=5A. Определите вектор индукции В магнитного поля в точке на расстоянии R=1м от проводника.
Магнитное поле бесконечного проводника:
По бесконечному прямому проводнику течет постоянный ток I=5A. Определите вектор индукции В магнитного поля в точке на расстоянии R=1м от проводника.
Обсуждение
23.11.2019, 12:27
общий
это ответ
Здравствуйте, stailes!
Дано : ток I=5A , расстояние R=1м .
Вычислить вектор индукции В магнитного поля.
Решение : "Модуль вектора магнитной индукции поля, кот-е создает бесконечно длинный прямой проводник с током :
B = µ0·µ·I / (2·[$960$]·R)
где R - расстояние от оси проводника до точки, в кот-й рассматривается поле (цитата из учебной статьи Ссылка1 ).
Здесь µ0 = 4·[$960$]·10-7 В·с/(А·м) - магнитная постоянная.
µ - относительная магнитная проницаемость вещества. µ=1 в вакууме или в воздухе.
Вектор B является перпендикулярным к плоскости, в кот-й расположены I и R, конкретное направление вектора магнитной индукции определяют при помощи правила буравчика (правого винта).
B = µ0·µ·I / (2·[$960$]·R) = 4·[$960$]·10-7·1·5 / (2·[$960$]·1) = 10·10-7 Тл = 1 мкТл
Ответ : Если ток течёт по проводнику вертикально вверх, а рассматриваемая точка расположена справа по рисунку, то вектор индукции магнитного поля величиной 1 мкТл направлен от зрителя.
Дано : ток I=5A , расстояние R=1м .
Вычислить вектор индукции В магнитного поля.
Решение : "Модуль вектора магнитной индукции поля, кот-е создает бесконечно длинный прямой проводник с током :
B = µ0·µ·I / (2·[$960$]·R)
где R - расстояние от оси проводника до точки, в кот-й рассматривается поле (цитата из учебной статьи Ссылка1 ).
Здесь µ0 = 4·[$960$]·10-7 В·с/(А·м) - магнитная постоянная.
µ - относительная магнитная проницаемость вещества. µ=1 в вакууме или в воздухе.
Вектор B является перпендикулярным к плоскости, в кот-й расположены I и R, конкретное направление вектора магнитной индукции определяют при помощи правила буравчика (правого винта).
B = µ0·µ·I / (2·[$960$]·R) = 4·[$960$]·10-7·1·5 / (2·[$960$]·1) = 10·10-7 Тл = 1 мкТл
Ответ : Если ток течёт по проводнику вертикально вверх, а рассматриваемая точка расположена справа по рисунку, то вектор индукции магнитного поля величиной 1 мкТл направлен от зрителя.
5
Добрый вечер. Спасибо за решение задачи.
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