Fri April 04, 2014 By: Vishnu Pillai

Thu Apr 03, 2014 5:32 am

Expert Reply
Fri April 04, 2014

For an LCR circuit driven with voltage of amplitude vm and frequency ω, the current amplitude is given by,

From the graph it is clear that the current amplitude is maximum at the resonant frequency ω0. The impedence is minimum at resonant frequency (Z = R).
Hence, im = vm/R
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