Предмет: Физика, автор: ЛирияТ

определите.напряжение.на.концах.железного.проводника.длиной.150.см.и.площадью.поперечного.сечения.0,025.в.котором.сила.тока.250.мА?

Ответы

Автор ответа: danus1

Эх
s=0,025мм
L=150см
I=250мА
р(железа)=0,10

Найти
U

Решение
R=(L*p):s=(1,5*0,10):0,025=
U=6*0,25=1,5В

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