Electronic Devices Question 45
Question: Wires P and Q have the same resistance at ordinary (room) temperature. When heated, resistance of $ P $ increases and that of Q decreases. We conclude that
[MP PMT 1995; MP PET 2001]
Options:
A) P and Q are conductors of different materials
B) P is N-type semiconductor and Q is P-type semiconductor
C) P is semiconductor and Q is conductor
D) P is conductor and Q is semiconductor
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Answer:
Correct Answer: D
Solution:
Conductor has positive temperature coefficient of resistance but semiconductor has negative temperature coefficient of resistance.
