If the capacitance in a series RLC circuit is increased, the Q-factor will _________.

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RRB JE EE 22 Apr 2025 Shift 2 CBT 2 Official Paper

Answer 1

Quality factor

In a resonant series circuit, the quality factor (Q) is a measure of how underdamped the system is and how sharp the resonance is.

It is given by:

\(QF={1\over R}\sqrt{L\over C}={\omega_oL\over R}\)

From the above expression, it is observed that the quality factor is inversely proportional to capacitance.

If the capacitance in a series RLC circuit is increased, the Q-factor will decrease.