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Question

In an isolated parallel plate capacitor of capacitance C, the four surfaces have charges Q1,Q2,Q3 and Q4 as shown. The potential difference between the plates is:
761727_c5af9114ebbf47f193e042b2bd3b4ef5.png

A
Q1+Q2+Q3+Q42C
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B
Q2+Q32C
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C
Q2Q32C
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D
Q1+Q42C
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Solution

The correct option is C Q2Q32C
Q2=Q3

So, (A) or (C)

and V=QC

But (A) cannot follow this Q2=Q3

and net Q=0

So, V=Q2Q32C

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