| 1 |
Flux through any closed surface is: |
- A. 1/ε<sup>2</sup><sub>∘</sub> times the total charge enclosed in it
- B. ε<sup>2</sup><sub>∘</sub> time the total charge enclosed in it
- C. 1/ε<sub>∘</sub> ties the total charge enclosed in ti
- D. ε<sub>∘</sub> time the total charge enclosed in it
|
| 2 |
If a charged body is moved against the electric field it will gain. |
- A. P.E.
- B. K.E.
- C. Mechanical energy
- D. Electrical potential energy
|
| 3 |
If the distance between the two charged bodies is halved, the force between them becomes. |
- A. Double
- B. Half
- C. Four times
- D. One times
|
| 4 |
A charge Q is divided into tweo parts q and Q-q and seperated by a distance R. The force of equilibrium between them will be maximum when: |
- A. q=Q/4
- B. q=Q/2
- C. q=Q
- D. None of these
|
| 5 |
The number of lines per unit area passing perpendicular through an area is called |
- A. Flux
- B. Electric intensity
- C. Both (a) , (b)
- D. None of these
|
| 6 |
A charge on 4 coulomb is in the field of intensity 4N/C the force on the charge is. |
- A. Uniform
- B. Non uniform
- C. Weak
- D. Strong
|
| 7 |
A capacitor is perfect in insulator for. |
- A. Alternating current
- B. Sparking current
- C. Eddy current
- D. Direct current
|
| 8 |
A proton is about 1840 time than an electron. When it is accelerated by a potencial difference if 1 kV, its kinetic energy will be: |
- A. 1884 ke V
- B. 1/1840 keV
- C. 1 keV
- D. 920 keV
|
| 9 |
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
|
| 10 |
One of the applications of electrostatic induction is |
- A. Laser
- B. Photocopier
- C. X ray machine
- D. Wilson cloud chamber
|