Current Electricity Ques 7
7. The solids which have the negative temperature coefficient of resistance are:
[2020]
(a) insulators only
(b) semiconductors only
(c) insulators and semiconductors
(d) metals
Show Answer
Answer:
Correct Answer: 7.(c)
Solution:
- (c) For metals temperature coefficient of resistance is positive while for insulators and semiconductors, temperature coefficient of resistance is negative.
BETA
