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Intrinsic Semiconductor

The solids wh...

Question

The solids which have the negative temperature coefficient of resistance are:

A

Semiconductors only

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B

Insulators and semiconductors

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C

Metals

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D

Insulators only

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Solution

The correct option is B Insulators and semiconductors
The negative temperature coefficient of the resistance is only present in the insulators or the semiconductors. In these, the resistance decreases with increase in temperature.
For metals temperature coefficient of resistance is positive.

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