For the series LCR circuit shown in the figure, what is the resonance frequency and the amplitude of the current at the resonating frequency

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2500 rad−s−1 and 52 A

2500 rad−s−1 and 5A

2500 rad−s−1 and 52A

25 rad−s−1 and 52 A

answer is B.

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Detailed Solution

Resonance frequencyω=1LC=18×10−3×20×10−6=2500 rad/secResonance current = VR=22044=5A