for circuit 1 :
P1 = V2/R1 + V2/R2 + V2/R3 + V2/6
for circuit 2
P2 = V2/R1 + V2/R2 + V2/R3 = V2 (1/R1 + 1/R2 + 1/R3) = V2 /Rp =
given that :
P1 = 5.1 + P2
V2/R1 + V2/R2 + V2/R3 + V2/6 = 5.1 + V2/R1 + V2/R2 + V2/R3
V2/6 = 5.1
V = sqrt(6 x 5.1) = 5.53 volts
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