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Question 21: NCERT Solutions for 12th Class Physics: Chapter 7-Alternating Current

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Question 21: NCERT Solutions for 12th Class Physics: Chapter 7-Alternating Current

Obtain the resonant frequency and Q-factor of a series LCR circuit with L = 3.0 H, C= 27 μF, and R = 7.4 fl. It is desired to improve the sharpness of the resonance of the circuit by reducing its ‘full width at half maximum’ by a factor of 2. Suggest a suitable way.

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  1. Solution:

    we want to improve the quality factor to twice, without changing resonant frequency (without changing L and C).

    Check the complete chapter with solutions.

    NCERT Solutions for 12th Class Physics: Chapter 7-Alternating Current