Предмет: Физика, автор: RoZaLi14

задача по физике: длина железного провода 100 м, площадь поперечного сечения 2 мм^2 сила тока равна 10 а. чему равно напряжение на концах этого провода (если удельное сопротивление железа 0,1 Ом*мм^2/м)
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Ответы

Автор ответа: naf52NAF
0
I=U/R
U=IR
R=ρL/S
U=IρL/S
U= 10*0,1*100/2=50 B
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