Ответ:
R13=R1*R3/R1+R3
R13=4*12/16=3
R2,13=R2+R3=3+3=6
Rобщ=R123/2=3 om
I=E/(R+r)=5A
U=I*R=5*3=15V
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Ответ:
R13=R1*R3/R1+R3
R13=4*12/16=3
R2,13=R2+R3=3+3=6
Rобщ=R123/2=3 om
I=E/(R+r)=5A
U=I*R=5*3=15V