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JAMB Physics 2003 Question 47

Question 47

Electronics

In a semiconductor junction diode, as the depletion or barrier layer is forward-biased, the layer

  1. A.widens
  2. B.narrows
  3. C.remains constant
  4. D.widens then narrows
Show the answer and explanation

Answer: B (narrows)

Explanation

Forward bias pushes electrons and holes towards the junction, so the depletion layer becomes narrower and current flows.