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Questions  

In the network shown, points A, B and C are at potentials of 70V, zero, and 10V respectively. The power drawn by the net work is

a
200W
b
100W
c
400W
d
Zero

detailed solution

Correct option is A

i=i1+i2;70−V10=V−020+V1030⇒V=40 volt   Power P=V2R=(70−40)210+(40−0)220+(40−10)230=90+80+30=200 watt

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