A 4 μF capacitor is charged to 400 V and then its plates are joined through a resistance of 1 kΩ . The heat produced in the resistance is

Question

A 4 μF capacitor is charged to 400 V and then its plates are joined through a resistance of 1 kΩ . The heat produced in the resistance is, 0.16 J, 1.28 J, 0.64 J, 0.32 J

MARKS App · Accepted Answer

The energy stored in the capacitor = 1 2 CV 2 = 1 2 × 4 × 10 - 6 × 400 × 400 = 0.32 J This energy will be converted into heat in the resistor.

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