Home Physics Semiconductor Electronics NEET Previous Year Question The solids which have the negative temperatu…
Physics Semiconductor Electronics NEET Previous Year Question MCQ (Single Correct)

The solids which have the negative temperature coefficient of resistance are [NEET 2020]

A
insulators only
B
semiconductors only
C
insulators and semiconductors
D
metals

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The correct answer is:
C

Insulators and semiconductors are those solids, which have negative temperature coefficient of resistance.
As, when temperature increases number of free electrons increases in both insulator and semiconductor.

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