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For the series LCR circuit shown in the ...

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

A

`2500 rad - s^(-1) and 5 sqrt(2) A `

B

` 2500 rad - s^(-1)and 5 A `

C

` 2500 rad - s ^(-1) and (5)/(sqrt(2)) A `

D

` 25 rad - s^(-1) and 5 sqrt(2) A `

Text Solution

Verified by Experts

The correct Answer is:
B
`omega = (1)/( sqrt(LC)) = (1)/( sqrt(8 xx 10^(-3) xx 20 xx 10^(-6)))= (10^(4))/(4) = 0.25xx 10^(4)`
= 2500 rad/sec
`I = (V)/(R) = (220)/(44) = 5A`
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