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in a LCR circuit capacitance is chagned ...

in a LCR circuit capacitance is chagned from C to 2C. For the resomat frequency to remain unchaged, the inductance should be chagned from L to

A

`L//2`

B

`2L`

C

`4L`

D

`L//4`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) for resonant frequency to remain same LC should be const. LC=const
`implies LC=L'xx2C implies L'=L/2`.
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