Question

A bulb and a capacitor are in series with an ac source. On increasing frequency how will glow of the bulb change

• A. The glow decreases
• B. The glow increases
• C. The glow remain the same
• D. The bulb quenches

Answer 1

The correct option is B The glow increases

The glow increases because, when frequency v is increased, the capacitive reactance $X_c=\frac{1}{2\pi vC}$ decreases and hence the current through the bulb increases which will lead to increase in glow