An alternating voltage of frequency f is applied across a series LCR circuit. Let f_r be the resonance frequency for the circuit. Will the current in the circuit lag, lead or remain in phase with the applied voltage when (i) f gt f_r(ii) fltf_r (iii) f=f_r? Explain your answer in each case.

An alternating voltage of frequency f is applied across a series LCR c

1.	An alternating voltage of frequency f is applied across a series LCR circuit. Let f_r be the resonance frequency for the circuit. Will the current in the circuit lag, lead or remain in phase with the applied voltage when (i) f gt f_r(ii) fltf_r (iii) f=f_r? Explain your answer in each case.
Answer» Solution :(i) Current will LAG because. `V_(L) lt V_( C)` HENCE `V_(L) - V_(C) gt O` (ii) Current will lead, because. `V_(L) lt V_( C)` Hence `V_(L) - V_( C) lt O` (III) In phase

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An alternating voltage of frequency f is applied across a series LCR circuit. Let f_r be the resonance frequency for the circuit. Will the current in the circuit lag, lead or remain in phase with the applied voltage when (i) f gt f_r(ii) fltf_r (iii) f=f_r? Explain your answer in each case.

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