Electrical Resonance series circuit
The power factor of an LR ac circuit is and resistance of the circuit is R. The reactance of a capacitor should be connected in series in this circuit so that the power factor of the circuit will become one..
if power factor of a LR circuit is then phase angle is i.e,
when power factor is unity circuit is in resonance
but
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The phase difference between the current and voltage of LCR circuit in series combination at resonance is
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