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Questions  

A fully charged capacitor has a capacitance C. It is discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity s and mass m. If the temperature of the block is raised by T, the potential difference V across the capacitance is

a
2mC∆Ts
b
mC∆Ts
c
ms∆TC
d
2ms∆TC

detailed solution

Correct option is D

U=12CV2=ms∆T V2=2ms∆TC ⇒V=2ms∆TC

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