Предмет: Физика, автор: kanaomi34

Допоможіть будь ласка вирішити завдання (фото)​

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Автор ответа: 1012009
1

Ответ:

Якщо два резистори з'єднані послідовно, то загальний опір ділянки кола дорівнює сумі опорів цих резисторів:

R = R1 + R2 = 40 Ом + 20 Ом = 60 Ом

Згідно з законом Ома, напруга на ділянці кола дорівнює добутку сили струму на опір:

U = I × R = 0,8 А × 60 Ом = 48 В

Отже, напруга на ділянці кола дорівнює 48 В

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