The charge on of water due to protons will be:
1. | 2. | ||
3. | 4. |
A polythene piece rubbed with wool is found to have a negative charge of Transfer of mass from wool to polythene is:
1.
2.
3.
4.
If electrons move out of a body to another body every second, how much time approximately is required to get a total charge of C on the other body?
1. years
2. years
3. years
4. years
Given below are two statements:
Assertion (A): | When charges are shared between any two bodies, no charge is really lost but some loss of energy does occur. |
Reason (R): | Some energy disappears in the form of heat, sparking, etc. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
A total charge is broken in two parts and and they are placed at a distance from each other. The maximum force of repulsion between them will occur, when:
1. | |
2. | |
3. | |
4. |
Two charges C and C are repelling each other with a force of N. If each charge is given C of charge, then the value of the force will be:
1. | N (attractive) | 2. | N (repulsive) |
3. | N (repulsive) | 4. | zero |
1. | from |
2. | from |
3. | from |
4. | from |
Two positive ions, each carrying a charge , are separated by a distance . If is the force of repulsion between the ions, the number of electrons missing from each ion will be:
( is the charge on an electron)
1. | 2. | ||
3. | 4. |
The acceleration of an electron due to the mutual attraction between the electron and a proton when they are apart is:
1. | 2 | ||
3. | 4. |