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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:
2
Resonant frequency in series `LCR` circuit is
`upsilon_(r ) = (1)/(2 pi sqrt(LC))`
If capacitance `C` increases, the resonant frequency will reduce, which can be achieved by adding another capacitor in parallel to the first.
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Knowledge Check

  • Reduction of resonant frequency in LCR circuit with a generator is done by:

    A
    Removing dielectric in a capacitor
    B
    Removing iron core of the inductor
    C
    Removing generator frequency
    D
    Adding another capacitor in parallel to

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    maximum
    B
    minimum
    C
    zero
    D
    infinity

  • The resonant frequency of a series LCR circuit with L=2.0 H,C =32 muF and R=10 Omega is

    A
    20 Hz
    B
    30 Hz
    C
    40 Hz
    D
    50 Hz

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