When \(10^{19}\) electrons are removed from a neutral metal plate, the electric charge on it is?
1. | \(-1.6\) C | 2. | \(+1.6\) C |
3. | \(10^{19}\) C | 4. | \(10^{-19}\) C |
The charge on 500 cc of water due to protons will be:
1. | 6.0 × 1027 C | 2. | 2.67 × 107 C |
3. | 6 × 1023 C | 4. | 1.67 × 1023 C |
A polythene piece rubbed with wool is found to have a negative charge of . Transfer of mass from wool to polythene is:
1. 0.7 × 10 - 18 kg
2. 1.7 × 10 - 17 kg
3. 0.7 × 10 - 17 kg
4. 1.7 × 10 - 18 kg
If \(10^9\) electrons move out of a body to another body every second, how much time approximately is required to get a total charge of \(1\) C on the other body?
1. \(200\) years
2. \(100\) years
3. \(150\) years
4. \(250\) 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. |