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Question

If VD=12 V and VE=8 V then


A
VA=56 volt
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B
VB=68 volt
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C
VC=52 volt
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D
VB=48 volt
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Solution

The correct option is A VA=56 volt
i=VDVER=1281=4 A
So,
VC=VD+iR=12+4×2=12+8=20 V
VB=VC+iR=20+4×3=20+12=32 V
VA=VB+iR=32+4×6=32+24=56 V

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