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An a.c. source is connected across an LC...

An a.c. source is connected across an LCR series circuit with `L = 100 mH, C = 0.1muF` and `R = 50 Omega`. The frequency of ac to make the power factor of the circuit, unity is

A

`(10^(4))/(2pi)Hz`

B

`(10^(3))/(2pi)Hz`

C

`(10^(-4))/(2pi)Hz`

D

`(10^(-3))/(2pi)Hz`

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The correct Answer is:
A
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