In A.C. voltage source, v = v0 sin t; having a fixed value for v0 , but of variable frequency, is connected across a given series LCR circuit. The variation of the current I, flowing in the circuit, with ω, (the angular frequency ofthe source) is as shown. The power consumption, in the circuit, at (angular) frequencies ω1 and ω2 , is
(1) 50% of that at (angular)frequency ω0 and the difference, (ω2- ω1), increases with an increase in the Q-factor of the circuit
(2) 50% of that at (angular) frequency ω0 and the difference, (ω2- ω1), decreases with an increase in the Q-factor of the circuit
(3) (nearly) 71% of that at (angular) frequency ω0 and the difference, (ω2- ω1) , decreases with an increase in the ‘Q-factor’ of the circuit
(4) (nearly) 71% of that at (angular) frequency ω0 and the difference, (ω2- ω1) , increases with an increase in the ‘Q-factor’ of the circuit