Capacitive Reactance
Trending Questions
Q. A capacitor is a perfect insulator for
- Alternating currents
- Direct currents
- Both ac and dc
- None of these
Q. A bulb and a capacitor are in series with an ac source. On increasing frequency how will glow of the bulb change
- The glow decreases
- The glow increases
- The glow remain the same
- The bulb quenches
Q.
An alternating voltage E =50 sin(100 t)V is connected to a 1 μF capacitor through an ac ammeter. What will be the reading of the ammeter?
10 mA
5 mA
Q. A bulb and a capacitor are in series with an ac source. On increasing frequency, glow of the bulb .
- increases
- decreases
- remains same
- quenches
Q. The frequency for which a 5 μ F capacitor has reactance of 11000Ω is given by
- 106π Hz
- 108π Hz
- 11000Hz
- 1000 Hz