<span>P-? </span>
<span>U-220 </span>
<span>I-5 </span>
<span></span>
<span>1100 Ватт </span>
<span>количесвто приборов по 100 </span>
<span>1100/100 </span>
<span>Отв: 11 приборов</span>
N = NA * n, следовательно
N = 6*10^23 * 10
N = 6*10^24
Io=Uo/Ro Ro=R2+R4 1/R4=1/R1+1/R3 1/R4=1/4+1/5 R4=2.22 Ом Ro=4+2.22=6.22 Ом Io=4.2/6.22=0.675 А