Решите плиз.............
R36=R3*R6/(R3+R6)=1/2=0.5 Ом R236=R2+R36=1.5+0.5=2 Ом R2356=R236*R5/(R236+R5)=2*(2/3)/(2+2/3)=4/8=0.5 Ом R12356=R1+R2356=0.5+0.5=1 Ом Ro=R12356*R4/(R12356+R4)=1/2=0.5 Ом ===================================