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A resistor R, an inductor L and a capaci...

A resistor `R`, an inductor `L` and a capacitor `C` are connected in series to an oscillator of frequency `n`. If the resonant frequency is `n_r,` then the current lags behind voltage, when

A

n = 0

B

`n lt n_(r)`

C

`n = n_(r)`

D

`n gt n_(r)`

Text Solution

Verified by Experts

The correct Answer is:
D
When `X_(L) gt X_(C)` (current lags voltage)
`n gt (1)/( 2 pi sqrt(LC)) " or " n gt n `
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