P=U^2/R R=U^2/P=220*220/110=440Om
R=p*L/S L=R*S/p=440Om*10^-6m2/110*10^-8Om*m=400m
ответ: 400 метров
P=U^2/R R=U^2/P=220*220/110=440Om
R=p*L/S L=R*S/p=440Om*10^-6m2/110*10^-8Om*m=400m
ответ: 400 метров