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Q.

An LC circuit contains 20mH inductor and a 50μF capacitor with an initial charge of 100mC. The resistance of the circuit is negligible. Let the instant the circuit is closed be t =0. Then the total energy stored initially is ___J.

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answer is 100.

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Detailed Solution

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E=q22C=(100×10-3)22×50×10-6=100 J

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