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lewe oczko
E1-Ir-I1R1=0
a) I1=(E1-Ir)/R1= (6-0,2*3)/90=0,06 A
b) I2=I-I1= 0,2-0,06=0,14 A
c) prawe oczko
I1R1-I2R2-E2=0
R2=(I1R1-E2)/I2= (0,06*90-2,6)/0,14=20
R2=20 Ω s
prawdzenie na dużym oczku
E1-E2-Ir-I2R2=0
6-2,6-0,2*3-0,14*20=0,0