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Physics · PYQ NEET UG 2020

हिन्दी

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

  1. insulators only
  2. semiconductors only
  3. insulators and semiconductors
  4. metals

Correct answer · Option 3

insulators and semiconductors

Explanation

Both insulators and semiconductors exhibit a negative temperature coefficient of resistance because their resistance decreases with an increase in temperature due to an increase in free charge carriers.

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