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Question

If VD=12 volt & VE=8 volt 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=4A
VC=VD+iR=12+4×2=12+8=20
VB=VC+iR=20+4×3=20+12=32
VA=VB+iR=32+4×6=32+24=56

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