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Practice question

Question

A capacitor of capacitance C is fully charged by a 200 V supply. It is then discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat 2.5×10 2 Jkg −1 K −1 and of mass 0.1 kg. If the temperature of the block rises by 0.4 K, what is the value of C?

Options

Choose one · Correct answer highlighted

Explanation

500 μF is correct per A capacitor of capacitance C is fully ch principle; validated by standard physics law.

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