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NEET2020PhysicsSemiconductorsActual

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

Options

  1. Ainsulators only
  2. Bsemiconductors only
  3. Cinsulators and semiconductors
  4. Dmetals

Correct answer

C. insulators and semiconductors

Step-by-step solution

The solids which have the negative temperature coefficient of resistance means the resistance of these solid will decrease when temperature increases due to more no of free electron at higher temperature. It happens in both insulators and semiconductors.

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