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Question

In Process 1,the energy stored in the capacitor EC and heat dissipated across resistance ED are related by:
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A
EC=12ED
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B
EC=2ED
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C
EC=ED
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D
EC=EDln2
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Solution

The correct option is C EC=ED
Potential difference V across capacitor C, and charge q are related as
V=qC
Final charge on the capacitor is CV
Wb=CV2
EC=12CV2
ED=WbΔEC=CV212CV2=12CV2
Hence EC=ED

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