A compass needle is placed in the gap of a parallel plate capacitor. The capacitor is connected to a battery through a resistance. The compass needle:
1. | does not deflect. |
2. | deflects for a very short time and then comes back to the original position. |
3. | deflects and remains deflected as long as the battery is connected. |
4. | deflects and gradually comes to the original position in a time which is large compared to the time constant. |
Displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor:
a. | increases |
b. | decreases |
c. | does not change |
d. | is zero |
Choose the correct option:
1. | (a), (b) |
2. | (b), (c) |
3. | only (c) |
4. | (a), (d) |