Предмет: Физика, автор: zoolltoon

Лампа и резистор соединены последовательно и подключены к источнику постоянного тока сопротивление лампы в пять раз больше, чем сопротивление в резисторе.Если напряжение на клеммах источника тока U=220 B, то напряжение в лампе равно:

Ответы

Автор ответа: bundasasha

Поскольку в схеме применено последовательное соединение, то общее сопротивление цепи будет: R +5R=6R. На резисторе падение напряжения составит: 220/6=36,67(В). Тогда напряжение на лампе будет: 220-36,67=183,33(В). (Внутренним сопротивлением источника тока пренебрегаем)

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