| 1 |
Terminal potential difference is greater than emf of the cell when |
- A. Circuit is open
- B. Circuit is closed
- C. small battery is charged by bigger battery
- D. None of these
|
| 2 |
The product of resistance and conductance is |
- A. 1
- B. Resistivity
- C. Conductance
- D. Zero
|
| 3 |
Thermistor with high - ve temperature coefficient are very accurate for measuring low temperature especially near is. |
- A. 10 kelvin
- B. 70 kelvin
- C. 200 kelvin
- D. 35 kelvin
|
| 4 |
If the resistance of 500 Ohm have fourth band of silver colour then its upper maximum resistance will be. |
- A. 600 Ohm
- B. 550 Ohm
- C. 450 Ohm
- D. 400 Ohm
|
| 5 |
If there is no fourth band, tolerance is shows as |
|
| 6 |
Heat energy is converted into electrical energy. |
- A. Solar cells
- B. thermocouples
- C. Electric generators
- D. None of above
|
| 7 |
Heat generated by a 40 W bulb in one hour is. |
- A. 140 J
- B. 1440 J
- C. 14400 J
- D. 144000 J
|
| 8 |
mho -m-1 is the unit of. |
- A. Resistance
- B. Resistivity
- C. Conductance
- D. Conductivity
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| 9 |
Seven resistances are connected as shown in the figures . THe equivalent resistance between A and B is: |
- A. 3Ω
- B. 4Ω
- C. 4.5Ω
- D. 5Ω
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| 10 |
The Kirchhoff 1<sup>st</sup> rule is manifestation of: |
- A. Law of conservation of mass
- B. Law of Conservation of charge
- C. Law of conservation of energy
- D. None of above
|