Срочно плиииииииз!!!!!!!

Question

Срочно плиииииииз!!!!!!!

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Answer 1

R12=R1*R2/(R1+R2)=6*12/(6+12)=4
R34=R3*R4/(R3+R4)=8/2=4
R1234=R12*R34/(R12+R34)=4/2=2
R=R1234+R5=2+3=5 Ом
I=U/R=15/5=3 A
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