If each of the values of inductance, capacitance and resistance of a series LCR circuit are doubled, the Q-factor of the circuit would

Q. If each of the values of inductance, capacitance and resistance of a series LCR circuit are doubled, the Q-factor of the circuit would

(A) reduce by a factor √2

(B) reduce by a factor 2

(C) increase by a factor √2

(D) increase by a factor 2

Ans: reduce by a factor 2

Sol:

In a series LCR circuit, Quality factor is given by

Given that each value of inductance capacitance and resistance are double.

Hence, Q – factor of the circuit will reduce by a factor of 2.