| 1 |
The algebraic sum of potential change in a closed circuit is zero. |
- A. Kirchhoff's 1st rule
- B. Kirchhoff 2<sup>nd</sup> rule
- C. Krichoff's 3<sup>rd</sup> rule
- D. Kirchhoff 4<sup>th</sup> rule
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| 2 |
Heat sensitive resistors are called. |
- A. resistors
- B. Capacitor
- C. Thermistors
- D. Inductors
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| 3 |
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
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| 4 |
The unit of conductivity is: |
- A. Ohm<sup>-3</sup>m<sup>-1</sup>
- B. Ohm m<sup>-1</sup>
- C. Both a and b
- D. Ohm m<sup>-1</sup>
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| 5 |
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
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| 6 |
Specific resistance of a material depends upon. |
- A. Length
- B. Area
- C. Temperature
- D. Both A and B
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| 7 |
The unit of temperature co efficient of resistivity is. |
- A. Ohm -m
- B. K-1
- C. K
- D. Ohm
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| 8 |
Heat energy is converted into electrical energy. |
- A. Solar cells
- B. thermocouples
- C. Electric generators
- D. None of above
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| 9 |
Calculate current in 2 2R /4Ω resistor. |
- A. 1 A
- B. 2R /4Ω
- C. R/3Ω
- D. 2R /3Ω
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| 10 |
Three resistors of resistance R each are combined in various ways, Which of the following cannot be obtained? |
- A. 3 RΩ
- B. 2R /4Ω
- C. R/3Ω
- D. 2R /3Ω
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