Q.

To increase the resonant frequency in series LCR circuit,

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a

Another capacitor should be added in series with the first capacitor

b

The source frequency should be decreased

c

Another resistance should be added in series with the first resistance.

d

Source frequency should be increased

answer is C.

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Detailed Solution

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f=12πLC

To increase the resonating frequency product of L and C should decrease.

By joining capacitor in series, capacitor will decrease

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