JAMB Physics 2008 Objective — Question 49
Question 49 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2008 Objective paper, with the correct answer and a full explanation.
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49. When a pure semiconductor is heated, its resistance
- A. decreasesCorrect
- B. increases
- C. remains the same
- D. increases and then decreases
Explanation
Unlike a metal, a semiconductor's resistance decreases as temperature increases, because more charge carriers become available.
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