| 1 |
Concept of the electric field lines is introduced by |
- A. Coulomb
- B. Faraday
- C. Einstein
- D. Joseph henry
|
| 2 |
Coulomb's force is: |
- A. Conservative force
- B. None conservative force
- C. Similar to frictional force
- D. None of the above
|
| 3 |
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
|
| 4 |
The leV = |
- A. 1.6x10-19C
- B. 1.6x10-11J
- C. 1.6x10-19J
- D. 1.6x10-11C
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| 5 |
The middle region of electric field is: |
- A. Maximum field spot
- B. Zero field spot
- C. Perpendicular field spot
- D. All of above
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| 6 |
if time constant in RC series circuit is small, then capacitor is charged or discharged. |
- A. Slowly
- B. Rapidly
- C. At constant rate
- D. Intermittently
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| 7 |
Presence of dielectric between two charges always. |
- A. Reduces the electric force
- B. Enhance the electric force
- C. Does not effect electric force
- D. Double the electric force
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| 8 |
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
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| 9 |
The capacitance of a capacitor depends upon. |
- A. Thickness of plates
- B. Charges on the plates
- C. Voltage applied
- D. Geometry of the capacitor
|
| 10 |
Dielectric constant <sub>εr</sub> for air is: |
- A. 1
- B. 1.006
- C. 1.0002
- D. 1.0006
|