| 1 |
For which material medium, force between two charged particles is maximum. |
- A. Ammonia
- B. Germanium
- C. Mica
- D. Teflon
|
| 2 |
One joule is equal to. |
- A. 1.6 x 10<sup>19</sup> eV
- B. 1.6 x 10<sup>-19</sup> eV
- C. 6.25 x 10<sup>-18</sup> eV
- D. 6.25 x 10 <sup>18</sup> eV
|
| 3 |
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
|
| 4 |
The leV = |
- A. 1.6x10-19C
- B. 1.6x10-11J
- C. 1.6x10-19J
- D. 1.6x10-11C
|
| 5 |
Selenium is a |
- A. Insulator
- B. Photoconductor
- C. Conductor
- D. First insulator then conductor
|
| 6 |
A capacitor is perfect in insulator for. |
- A. Alternating current
- B. Sparking current
- C. Eddy current
- D. Direct current
|
| 7 |
The relative permitivity of air is |
- A. 79.5
- B. 1.006
- C. 1.06
- D. 1.0006
|
| 8 |
Selenium is |
- A. Insulator is dark
- B. Insulator in light
- C. Conductor in dark
- D. Semi conductor in dark
|
| 9 |
Closeness of the electric field lines is the measure of. |
- A. Direction of field
- B. Strength of field
- C. Potential difference
- D. Uniformity of field
|
| 10 |
The work done is bringing a unit positive charge from infinity to that point in an electric field is called. |
- A. Potential
- B. Potential difference
- C. Absolute potential
- D. All of these
|