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JEE Physics · Medium

Current Electricity: Effect of Temperature on Semiconductor MCQ

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Effect of Temperature on SemiconductorMediumQuestion 31671

Question

As temperature of a semiconductor increases, its electrical conductivity:
  1. A
    Decreases
  2. B
    Increases
    Correct
  3. C
    Remains constant
  4. D
    First increases then decreases

Correct answer

Increases

Explanation

More carriers are thermally excited across the band gap as T rises. This dominates over the slight increase in scattering, so conductivity increases (unlike metals).

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