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By constructing equivalent voltage source at the left of terminals a and b in the given circuit, Find current I.

By constructing Millman’s equivalent voltage source at the left of terminals a and b in the given circuit, Find current I.

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Solution:

Given circuit. Can be drawn as,

enter image description here

Milliman's equivalent voltage source circuit. is,

enter image description here

Rmm=Iaid1000Ω....(1)

I=VmRm+1000

Where,

Vm=V1G1+V2G2+V3G3G1+G2+G3 ....... (2)

&

Rm=1Gm=1G1+G2+G3

G1=1R1=110=0.1;G2=1R2=1100=0.01vG3=1R3=1100=0.01v

from..... (2)

Rm=1Gm=10.1+0.01+0.01=8.333ΩRm=8.333Ω

from .....(2)

Vm=10(0.1)20(0.01)+50(0.01)0.1+0.01+0.01Vm=10.833 Volts 

from .....(1)

I=10.8338.333+1000I=0.0107Amp

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