MHT CET 2022 Physics question
A resistance, 5 mH coil and F capacitor are joined in series. When alternating current source of suitable frequency is joined to this combination, the circuit resonates. If the resistance is halved, the resonant frequency is
Answer: (D)
Solution
The resonant frequency of a series LCR circuit is , which depends only on and and not on . Halving the resistance changes only the sharpness of
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