Question

Problema 2.19
Repede ,va rog frumos!!!

Answer 1

-  cand se foloseste o singura sursa :  I = E /(R +r)    E = I·(R + r)
a) Is = nE/ (R + nr)     (n =2)      Is = 2·I(R + r) / (R + 2r)
b)E = IR + Ir      r = (E - IR)/ I
c) Ip = E / (R + r/n)    Ip = I(R + r) / (R + r/2)