The number of holes in an intrinsic semiconductor

JAMB Physics 2023 199 views
Source: JAMB · 2023

The number of holes in an intrinsic semiconductor

  1. is greater than the number of free electrons
  2. is less than the number of free electrons
  3. is not equal to the number of free electrons
  4. is equal to the number of free electrons ✓
Explanation

In a pure (intrinsic) semiconductor, each electron that breaks free leaves behind one hole. They are made in pairs.

So the number of holes is equal to the number of free electrons.

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