| 1 |
The number of electrons in one coulomb charge is equal to |
- A. 6.2 x 10<sup>18</sup> electrons
- B. Zero electrons
- C. 1.6 x 10<sup>-22</sup> electrons
- D. 6.2 x 10<sup>21</sup> electrons
|
| 2 |
Due to polarization, electric field E. |
- A. Increase
- B. Decrease
- C. First increases then decreases
- D. Remain same
|
| 3 |
Two metallic sphere of radius 2 cm and 4 cm get equal quantity of charge. Which has greater surface charge density ? |
- A. 2<sup>nd</sup> sphere
- B. Both have same
- C. First sphere
- D. None of these
|
| 4 |
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
|
| 5 |
Gauss's law can only be applied to. |
- A. A curved surface
- B. A flat surface
- C. A closed surface
- D. A surface of any shape
|
| 6 |
Coulomb /volt is called. |
- A. Farad
- B. Ampere
- C. Joule
- D. Henry
|
| 7 |
In photocopier, then drum is coated with layer of. |
- A. Aluminium
- B. Copper
- C. Selenium
- D. silver
|
| 8 |
The net charge on a capacitor magnitude of charge of charge |
- A. Infinity
- B. 2 q
- C. Q/2
- D. Zero
|
| 9 |
One electron volt is equal to. |
- A. 1.6 x 10<sup>-19</sup> Joule
- B. 1.6 x 10<sup>-19</sup>Coulomb
- C. 1.6 x 10<sup>-12</sup>N
- D. 1.6 x 10<sup>18</sup>Joule
|
| 10 |
The process of copying is: |
- A. Axillugraphy
- B. Chromatography
- C. Xerography
- D. Spectrography
|