| 1 |
mho -m-1 is the unit of. |
- A. Resistance
- B. Resistivity
- C. Conductance
- D. Conductivity
|
| 2 |
the current which flows from a point at higher. potential to point at lower potential is called. |
- A. Electric current
- B. Conventional current
- C. Either of these
- D. None of above
|
| 3 |
Two resistance of 2 Ohm each are connected in parallel combination equivalent resistance will be. |
- A. 4 Ohm
- B. 2 Ohm
- C. 1 Ohm
- D. 8 Ohm
|
| 4 |
A rheostat can operate as. |
- A. Amplifier
- B. Potential divider
- C. Oscillator
- D. Transformer
|
| 5 |
A rheostat can be used as variable resistor as well as a------------- |
- A. Potential divider
- B. Current divider
- C. Wheat stone bridge
- D. Power divider
|
| 6 |
The value of maximum output power is? |
- A. E/4R
- B. E<sup>2</sup>/4R
- C. E/4R<sup>2</sup>
- D. Non of above
|
| 7 |
When a wire of length 'l' and resistance R is cut into two equal parts then resistivity of each part. |
- A. is doubled
- B. Remains the same
- C. Is halved
- D. Is one fourth
|
| 8 |
When a pot difference of 4 volt is applied across resistance, 10 J of energy is converted Find charge flows |
- A. 0.20 C
- B. 2.5 C
- C. 5.0 C
- D. 10.0 C
|
| 9 |
The product of resistance and conductance is |
- A. 1
- B. Resistivity
- C. Conductance
- D. Zero
|
| 10 |
When a wire is stretched and its radius becomes r/2, then its resistance will be |
- A. 16 R
- B. 4 R
- C. 2R
- D. 0
|