To reduce the resonant frequency in an LCR series circuit w…

Physics Alternating Current NCERT Examplar MCQ (Single Correct)

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

The generator frequency should be reduced

Another capacitor should be added in parallel to the first

The iron core of the inductor should be removed

Dielectric in the capacitor should be removed

Text Solution

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The correct answer is:

We know that resonant frequency in an L-C-R circuit is given by

Now to reduce either we can increase L or we can increase C.
To increase capacitance, we must connect another capacitor parallel to the first.

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