Ответ:

Объяснение:

U1 = R1*I1 = 2*4 = 8 B

r34 = R3+R4 = 3+4 = 7 Ом

r56 = = R5*R6 / (R5+R6) = 6*3 / (6+3) = 2 Ома

r256 = r56+R2 = 2 + 4 = 6 Ом

r 34256 = r256*r34 / (r34 + r256) = 6*7 / (6+7) == 3.2 Ома

Rob = R1+r34256 =  2+3.2= 5.2 Ом

U34 = I1*r34256 = 4*3.2 = 12.8 B

I3=I4 = U34 / r34 = 12.8 / 7 = = 1.8 A

I2 = I1- I3 = 4 - 1.8 = 2.2 A

P2 = R2*I^2 = 4* 2.2^2 = = 19.4 Вт

U2 = I2*R2 = 2.2*4 = 8.8 B

U6=U5 = U34 - U2 = 12.8 - 8.8 = 4 B

I5 = U5 / R5 = 4/ 6 = =0.7 A

I6 = U6 / R6 = 4/3 = = 1.3 A