AIEEE 2005 Physics Solved Paper

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