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JAMB Physics 2004 Question 24

Question 24

Electronics

For semiconductors to have negative temperature coefficient of resistance implies that

  1. A.they have electrons and holes at high temperatures.
  2. B.their resistance is constantly changing with temperature.
  3. C.their resistance increases with temperature.
  4. D.their resistance decreases with temperature.
Show the answer and explanation

Answer: D (their resistance decreases with temperature.)

Explanation

A negative temperature coefficient means resistance falls as temperature rises.