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Question

Consider the following statements A and B and identify the correct answer :
A : Thermistors can have only negative temperature coefficients of resistances.
B : Thermistors with negative temperature coefficients of resistance are used as resistance thermometers, to measure low temperatures of the order of 10 K.

A
Both A and B are true
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B
Both A and B are false
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C
A is true, but B is false
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D
A is false, but B is true
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Solution

The correct option is B A is false, but B is true
We know that thermistors can have both negative and positive temperature coefficients of resistances, but negative temperature will be used to measure low temperature in resistance thermometer and positive will be for higher.

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