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JAMB Physics 2012 Question 49

Question 49

Electronics

If a reverse-biased voltage is applied across a p-n junction, the depletion layer width is

  1. A.increased
  2. B.decreased
  3. C.constant
  4. D.halved.
Show the answer and explanation

Answer: A (increased)

Explanation

In reverse bias, holes and electrons are pulled away from the junction towards the terminals, so the depletion layer becomes wider.