An alternating e.m.f. of frequency v= 12πLC is applied to a series LCR circuit. For this frequency of the applied e.m.f.
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a
The circuit is at resonance and its impedance is made up only of a reactive part
b
The current in the circuit is in phase with the applied e.m.f. and the voltage across R equals this applied emf
c
The sum of the p.d.’s across the inductance and capacitance equals the applied e.m.f. which is 180o ahead of phase of the current in the circuit
d
The quality factor of the circuit is ωL/R or 1/ωCR and this is a measure of the voltage magnification (produced by the circuit at resonance) as well as the sharpness of resonance of the circuit
answer is D.
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Detailed Solution
The quality factor of the circuit is ωL/R or 1/ωCR and this is a measure of the voltage magnification (produced by the circuit at resonance) as well as the sharpness of resonance of the circuit