R2,3 = 10 + 10 = 20 Ом.
R2-4 = (20*10)/(20 + 10) = 200/30 = (20/3) Ом.
R1-4 = 10 + (20/3) = (50/3) Ом.
Io = I1 = 110/(50/3) = 330/50 = 33/5 = 6,6 A.
U2-4 = 110 - 6,6*10 = 110 - 66 = 44 B.
I2 = I3 = 44/20 = 2,2 A,
I4 = 44/10 = 4,4 A.
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Verified answer
R2,3 = 10 + 10 = 20 Ом.
R2-4 = (20*10)/(20 + 10) = 200/30 = (20/3) Ом.
R1-4 = 10 + (20/3) = (50/3) Ом.
Io = I1 = 110/(50/3) = 330/50 = 33/5 = 6,6 A.
U2-4 = 110 - 6,6*10 = 110 - 66 = 44 B.
I2 = I3 = 44/20 = 2,2 A,
I4 = 44/10 = 4,4 A.