| A: Thermistors can have only negative temperature coefficients of resistance. |
| B: Thermistors with negative temperature coefficients of resistance are used as resistance thermometers, to measure low temperature of the order of 10 K. |
A) Both A and B are true
B) Both A and B are false
C) A is true, but B is false
D) A is false, but B is true
Correct Answer: A
Solution :
A thermistor is a heat sensitive resistor usually made of semiconductor material. The temperature coefficient of a thermistor is negative but is unusually large, of the order of\[-0-04{{({{\,}^{o}}C)}^{-1}}\] They are used for resistance thermometers in very low temperature measurement of the order of 10 K.
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