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The thermistors are usually made of...

The thermistors are usually made of 

A

Metals with low temperature coefficient of resistivity

B

Semi conducting materials having low temperature coefficient of resistivity

C

Metal oxides with high temperature coefficient of resistivity

D

Metals with high temperature coefficient of resistivity.

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - IA
  1. Material used for heating coils is

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  2. For making standard resistance wire of following material is used

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  3. The thermistors are usually made of

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  4. For a chosen nonzero value of voltage, there can be more than one valu...

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  5. A metallic resistor is connected across a battery. If the number of co...

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  6. Choose the correct alternative

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  7. Two wires of resistance R(1) and R(2) at 0^(@)C have temperature coeff...

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  8. Arrange the following materials in the increasing order of their resis...

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  9. Specific resistance of a wire depends upon

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  10. Fuse wire is a wire of

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  11. Which of following causes production of heat, when current is set up i...

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  12. A constant voltage is applied between the two ends of a metallic wire....

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  13. According to Joule's law, if the potential difference across a conduct...

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  14. A resistor R(1) dissipates the power P when connected to a certain gen...

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  15. Appliances based on heating effect of current work on

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  16. The electric power transferred by a cell to an external resistance is ...

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  17. When electric bulbs of same power, but different marked voltage are co...

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  18. Choose the correct statement

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  19. For a cell which charging in a circuit

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  20. The dimensional formula of the emf of a source of current are same as ...

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