(a) Explain the term ‘sharpness of resonance’ in ac circuit.
(b) In a series LCR circuit, . What is the value of power factor for this circuit ?
a) The sharpness of resonance is the sharpness of the peak of the resonance curve. The sharper the curve the narrower is the resonance or the resonance lasts over a very small range of frequencies.
b) Power factor
Here Z=R since
Therefore power factor=1