Răspuns:
Explicație:
1) Re (k=deschis) =1/((1/3R+1/3R)= 3R/2=150 Ohm
2) U=R*I =150*0.36 = 54 V
3) Re (k=inchis) = 1/((1/R)+)1/2R))+1/((1/R)+)1/2R))= 2R/3 + 2R/3 = 4R/3
= 400/3 Ohm
I = 54*3/400= 0.405 A
4) I=I1+I2 I1/I2=2 I1=2*I/3 I2=I/3
Delta I = 2*I/3 - I/3 = I/3 = 0.135 A
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