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Alternating Current

JEE Main level, single correct, medium

96 of 190

Question 96 of 190

To increase the resonant frequency in series LCR circuit,

Show answer and solution

Answer: (C) Another capacitor should be added in series with the first capacitor

The resonant frequency of an LCR circuit is given by

f=\dfrac{1}{2\pi \sqrt{LC}}

. It does not depend on the source frequency as well as the resistance of the circuit.
Therefore, to increase the resonating frequency product of

L

and

C

should decrease.
By joining another capacitor in series, the equivalent capacitor will decrease.
Hence, option C is correct option.

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JEE Main 2025 Apr 2 Shift 1 question paper

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