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NEET UG PHYSICS MCQ: ALTERNATING CURRENT
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An LC circuit contains a 20 mH inductor and a 50 μF capacitor with an initial charge of 10 mC. The resistance of the circuit is negligible. Let the instant the circuit is closed be t = 0. At what time is the energy stored completely magnetic?
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Correct option: B
t = 1.57 ms
Option A (88 – 198 pF) is correct because it represents the range of capacitance values needed to tune to the given frequency range.
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