| 1 |
Electric current in conductors is due to the flow of: |
- A. Positive ions
- B. Negative ions
- C. Positive charge
- D. Free electrons
|
| 2 |
The ampere is a unit of: |
- A. Energy
- B. Potential differrence
- C. Electric potential
- D. Electric current
|
| 3 |
Specific resistance of silver = ________ x 10<sup>-s</sup>Ohm-meter |
- A. 5.25
- B. 2.75
- C. 1.69
- D. 1.62
|
| 4 |
What type of graph is in between V and I? |
- A. Curved
- B. Parabola
- C. Straight line
- D. None of these
|
| 5 |
The property of substance, which opposes the flow of current through it is called. |
- A. Resistance
- B. Reactance
- C. Resistivity
- D. None of these
|
| 6 |
<p class="MsoNormal">The distance between principal focus and pole of mirror is
called:<o:p></o:p></p> |
- A. <p class="MsoNormal">Principal focus<o:p></o:p></p>
- B. <p class="MsoNormal">Focal length<o:p></o:p></p>
- C. <p class="MsoNormal">Aperture<o:p></o:p></p>
- D. <p class="MsoNormal">Image<o:p></o:p></p>
|
| 7 |
<p class="MsoNormal">The index of refraction depends on:<o:p></o:p></p> |
- A. <p class="MsoNormal">The focal length<o:p></o:p></p>
- B. <p class="MsoNormal">The speed of light<o:p></o:p></p>
- C. <p class="MsoNormal">The image distance<o:p></o:p></p>
- D. <p class="MsoNormal">The object distance<o:p></o:p></p>
|
| 8 |
Specific resistance of copper is ____________ x 10<sup>-8</sup>Ohm-meter |
- A. 1.62
- B. 1.69
- C. 5.25
- D. 2.75
|
| 9 |
The rate of flow of charge through any cross-sectional area is called: |
- A. potential difference
- B. Energy
- C. Coulomb
- D. Electric current
|
| 10 |
That period in which voltage repeats its value in equal intervals is called: |
- A. cycle
- B. Time period
- C. Frequency
- D. Amplitude
|