Предмет: Физика, автор: love67

определить сопротивление резистора , включенного в электрическую сеть с напряжением 290 В, чтобы через него протекал ток 7А

Ответы

Автор ответа: MrLyanda

1

R=U/I =290/7=41,43 ом

Автор ответа: kirills1

1

По простенькому закону Ома:

R = $\frac{U}{I}$

U - напряжение ( 290 В )
I - сила тока ( 7 А )

R = $\frac{290}{7}$ ≈ 41,43 Ом

MrLyanda: только правила округления забыли

MrLyanda: 41,42857

kirills1: да да , там же 5 стояло!

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