| 1 |
Capacitance of a capacitor does not depend upon. |
- A. Distance between plates
- B. Area of plates
- C. Electric field between plates
- D. Medium between plates
|
| 2 |
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
|
| 3 |
Dielectric constant <sub>εr</sub> for air is: |
- A. 1
- B. 1.006
- C. 1.0002
- D. 1.0006
|
| 4 |
Which material should be inserted between the plates of a capacitor in order to increase its capacitance. |
- A. Copper
- B. Mica
- C. Iron
- D. Tin
|
| 5 |
The electric intensity at infinite distance from the point charge is |
- A. Infinite
- B. Zero
- C. Positive
- D. Negative
|
| 6 |
Due to polarization, electric field E. |
- A. Increase
- B. Decrease
- C. First increases then decreases
- D. Remain same
|
| 7 |
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
|
| 8 |
The "toner" of photocopier is given: |
- A. Positive charge
- B. Negative charge
- C. Remains neutral
- D. All of above
|
| 9 |
NC-1 is the SI unit is |
- A. Force
- B. Charge
- C. Current
- D. Electric intensity
|
| 10 |
The electric field created by positive charge is: |
- A. Radially outward
- B. Circular
- C. Radially inward
- D. Zero
|