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 Δ T, the potential difference V across the capacitor is

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(2) √(2msΔ T)/C. All the stored electrical energy ends up as heat in the insulated block. Energy stored: U=1/2CV². Heat gained: Q=msΔ T. 1/2CV²=msΔ T⇒ V²=(2msΔ T)/C. V=√(2msΔ T)/C.

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 Δ T, the potential difference V across the capacitor is

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