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в приведенном на рисунке цепи амперметр тока показывает 0.5 a,а вольтметр 3 в.
Выберите правильное утверждение.
а)сила тока в первом резисторе равна 0,25 А
б)электрическое сопротивление первого резистора равна равно 6 ОМ
в)Сила тока во втором резисторе меньше,чем в первом.
г)общее напряжение в цепи меньше 3 В
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Предмет:
Физика -
Автор:
calixtosullivan - 6 лет назад
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Ответы 1
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так как цепь последовательная то ток везде одинаков I1=0.5A U1=3 BR=3/0.5=6 Ом Правильный ответ б)электрическое сопротивление первого резистора равна равно 6 ОМ
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Автор:
sophiakeza - 6 лет назад
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