| 1 |
Electric flux is a: |
- A. Scalar quantity
- B. Vector quantity
- C. Variable quantity
- D. None of these
|
| 2 |
A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, Then |
- A. The charge in the plates reduces and potencial difference increase
- B. Potencial difference between the plates increase, stored energy decreases and charge remains the same
- C. Potencial difference between the plates decreases, stored energy decreases and charge remains unchanged
- D. None of them
|
| 3 |
Due to polarization, electric field E. |
- A. Increase
- B. Decrease
- C. First increases then decreases
- D. Remain same
|
| 4 |
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
|
| 5 |
Farad is defined as |
- A. "Coulomb/Volt
- B. Ampere /Volt
- C. Coulomb /Joule
- D. Volt/Coulomb
|
| 6 |
The absolute electric potential at a point distance 20 cm from a charge of 2 uC is. |
- A. 9 x 10<sup>2</sup> V
- B. 9 x 10<sup>3</sup> V
- C. 9 x 10<sup>4</sup> V
- D. 9 x 10 <sup>5</sup> V
|
| 7 |
The toner of printer is given |
- A. Positive charge
- B. Negative charge
- C. Neutral
- D. First positive then negative
|
| 8 |
Total flux through a closed surface depends on. |
- A. Shape of surface
- B. Medium only
- C. Charge enclosed only
- D. Charge and Medium
|
| 9 |
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
|
| 10 |
If the separation between the plates of a capacitor is doubled then its capacitance become. |
- A. Double
- B. Half
- C. One fourth
- D. Three times
|
