| 1 |
A wire uniform cross-section. A length L and resistance R is cut into two equal parts. The resistivity of each part will be: |
- A. Doubled
- B. Halved
- C. Remain the same
- D. One fourth
|
| 2 |
e.m.f is the conversion of --------------- energy into electrical energy |
- A. Chemical
- B. Solar
- C. Light
- D. None of these
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| 3 |
The SI unit of resistivity is. |
- A. Ohm m-2
- B. Ohm m-1
- C. Ohm m
- D. Ohm
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| 4 |
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
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| 5 |
mho -m-1 is the unit of. |
- A. Resistance
- B. Resistivity
- C. Conductance
- D. Conductivity
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| 6 |
A rheostat can operate as. |
- A. Amplifier
- B. Potential divider
- C. Oscillator
- D. Transformer
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| 7 |
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
|
| 8 |
Potentiometer is used to. |
- A. Compare emf of two cells
- B. Detect internal resistance of cell
- C. Measure P.D.
- D. All of these
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| 9 |
The potential difference between the head and tail of an electrical to |
- A. 600 Volt
- B. 700 Volt
- C. 800 Volt
- D. 900 Volt
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| 10 |
What is the resistance of carbon resistor which has band brown black brown. |
- A. 100 Ohm
- B. 1000 Ohm
- C. 10 Ohm
- D. 1.0 Ohm
|