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In an LCR series circuit the capacitance...

In an LCR series circuit the capacitance is changed from `C` to `4C` For the same resonant fequency the inductance should be changed from `L` to .

A

L/4

B

L/2

C

L

D

2L

Text Solution

Verified by Experts

The correct Answer is:
A
`f=(1)/(2pisqrt(LC))`
For resonant frequency LC is constant
`therefore LC=L_(1)C_(1)`
`therefore L_(1)=(C)/(C_(1))L=(L)/(4)`
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