R13 = 8+2 = 10 Ом
R24 = 10+5 = 15 Ом
R = R13*R24 / (R13+R24) = 10*15 / (10+15) = 6 Ом
Rобщ=((R1+R3)*(R2+R4))/(R1+R3+R2+R4)
Rобщ=(10*15)/(10+15)=6Ом
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R13 = 8+2 = 10 Ом
R24 = 10+5 = 15 Ом
R = R13*R24 / (R13+R24) = 10*15 / (10+15) = 6 Ом
Verified answer
Rобщ=((R1+R3)*(R2+R4))/(R1+R3+R2+R4)
Rобщ=(10*15)/(10+15)=6Ом