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Question

An ac circuit consists of an inductor of inductance 0.5 H and a capacitor of capacitance 8 μF in series. The current in the circuit is maximum when the angular frequency of ac source is

A
500 rad/sec
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B
2×105 rad/sec
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C
4000 rad/sec
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D
5000 rad/sec
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Solution

The correct option is A 500 rad/sec
Current will be maximum at the condition of resonance. So resonant frequency
ω0=1LC=10.5×8×106=500 rad/s

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