NEET Physics: Questions 1036 - 1038 of 2099
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Question number: 1036
Question number: 1037
An alternating emf of frequency is applied to a series LCR circuit. For this frequency of the applied emf is,
The circuit is at resonance and its impedance is made up only of a reactive part.
The current in the circuit is not in phase with the applied e. m. f. and the voltage across R equals this applied emf
The sum of the potential differences across the inductance and capacitance equals the applied e. m. f. which is 180° ahead of phase of the current in the circuit
The quality factor of the circuit is or 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.