Lesson eLearning

When silicon is doped with (2.0 ) donor atoms per cm(^3), the semiconductor is called ___.

easy MCQ 2 marks Class 12 · Physics · Semiconductor Electronics Materials Devices and Simple Circuits
  1. A) Intrinsic
  2. B) n-type
  3. C) p-type
  4. D) Semi‑insulating
Answer
B) n-type

The correct answer is B) n-type — 3. Hence the correct choice is (B).

Step-by-step solution

  1. 1. Identify that donor atoms donate extra electrons, creating a surplus of free electrons.
  2. 2. A semiconductor with excess electrons is called an n‑type semiconductor.
  3. 3. Hence the correct choice is (B).
Common mistake: Confusing donor doping with acceptor doping

Concept tested: Doping of silicon to form n‑type

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