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To reduce the resonant frequency in an L...

To reduce the resonant frequency in an `LCR` series circuit with a generator

A

the generator frequency should be reduced.

B

another capacitor should be added in parallel to the first

C

the iron core of the inductor should be removed.

D

dielectric in the capacitor should be removed.

Text Solution

Verified by Experts

The correct Answer is:
B
The resonant frequency of L-C-R series circuit is `v_(0) = (1)/(2pi sqrt(LC))`
So to reduce resonant frequency, we have either to increase L or to increase C.
To increase capacitance, another capacitor must be connected in parallel with the first.
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