| 1 |
A one microfarad capacitor of a TV is subjected to 4000 V potencial difference.The energy stored in capacitor is: |
- A. 8 j
- B. 16 j
- C. 4 x 10<sup>-3</sup>j
- D. 2 x 10<sup>-3</sup>j
|
| 2 |
The electrical intensity is equal to: |
- A. -Δr/Δv
- B. Δv/Δr
- C. Δv/Δv
- D. -Δv/Δr
|
| 3 |
If both the magnitude of charges and distance between them is doubled, then coulomb's force will be. |
- A. Doubled
- B. Hlaf
- C. Remain same
- D. One fourth
|
| 4 |
If F1 and F2 are teh magnetic forces acting on a particle and electron respectively when moving perpendicular to the magnetic field then. |
- A. F1=F2
- B. F1>F2
- C. F1<F2
- D. F1 = 4F2
|
| 5 |
The middle region of electric field is: |
- A. Maximum field spot
- B. Zero field spot
- C. Perpendicular field spot
- D. All of above
|
| 6 |
The SI unit of relative permittivity is. |
- A. Fm-1
- B. C2N-1m-2
- C. Nm2C-2
- D. No unit
|
| 7 |
The leV = |
- A. 1.6x10-19C
- B. 1.6x10-11J
- C. 1.6x10-19J
- D. 1.6x10-11C
|
| 8 |
Coulomb's force is: |
- A. Conservative force
- B. None conservative force
- C. Similar to frictional force
- D. None of the above
|
| 9 |
A capacitor stores energy in the form of. |
- A. Magnetic field
- B. Heat energy
- C. Electrical energy
- D. Mechanical energy
|
| 10 |
Electron volt is the unit of. |
- A. Potential
- B. Potential difference
- C. Electric current
- D. Electric energy
|