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Question

In n-type semiconductors, the electron concentration is equal to :
  1. density of donor atoms
  2. density of acceptor atoms
  3. density of both type of atoms
  4. neither density of acceptor atoms nor density of donor atoms

A
density of both type of atoms
B
density of donor atoms
C
density of acceptor atoms
D
neither density of acceptor atoms nor density of donor atoms
Solution
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In n-type semiconductors, the electron concentration is equal to the density of donor atoms because the electrons for conduction are solely given by the donor atom.

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