- 1(current)
Q. No.On vehicles that carry inflammable fluids, you might notice metallic chains dangling down, touching the ground. Why are they actually used?
| 1. | Just a random custom. |
| 2. | To alert other vehicles. |
| 3. | To discharge static charges produced due to friction. |
| 4. | Just for fashion vibes. |
| 1. | \(5.12 \times 10^{25} \) | 2. | \(5 \times 10^{12} \) |
| 3. | \(2 \times 10^{13} \) | 4. | \(5.12 \times 10^{13}\) |
1. \(5~\mu\text{C}\)
2. \(-5~\mu\text{C}\)
3. zero
4. \(2~\mu\text{C}\)
| 1. | Charge on any body is quantised. |
| 2. | Charge on any isolated system remains conserved. |
| 3. | Unlike mass, the charge is non-relativistic. |
| 4. | Unlike charged bodies always repel each other. |
| 1. | Charges were named as positive and negative by the American scientist Benjamin Franklin. |
| 2. | Gold leaf electroscope can be used to detect charge on a body. |
| 3. | Charge can be created on any substance by the process of induction. |
| 4. | Both (1) and (2) are correct. |
A particle of mass \(m\) and charge \(q\) is at rest in an inertial frame. It is then given a velocity \(\dfrac{\sqrt{3}c}{2},\) where \(c\) is the speed of light in a vacuum. The electric charge of the particle, as measured in the same inertial frame, will:
| 1. | increase to \(2q\) | 2. | increase to \(\sqrt{3} q\) |
| 3. | decrease to \(\dfrac{q}{2}\) | 4. | remain equal to \(q\) |
| 1. | half-integral multiple of the least amount of charge |
| 2. | zero |
| 3. | square of the least amount of charge |
| 4. | integral multiple of the least amount of charge |
Who evaluated the mass of electron indirectly with help of charge:
1. Thomson
2. Millikan
3. Rutherford
4. Newton
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Which one of the following statements about electric charge is incorrect?
| 1. | The charge on a body is always an integral multiple of the elementary charge. |
| 2. | Electric charge is a scalar quantity. |
| 3. | The total charge of an isolated system remains conserved. |
| 4. | Electric charge can be converted into energy, and energy can be converted into charge. |
- 1(current)
Q. No.
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