Assertion (A) : The temperature coefficient of resistance is positive for metals and negative for p-type semiconductors.

Assertion (A) : The temperature coefficient of resistance is positive for metals and negative for p-type semiconductors.
Reason (R) : The charge carriers in metals are negatively charged, whereas the majority charge carriers in p-type semiconductors are positively charged.

 

Ans. A: Metals have a positive temperature coefficient of resistance, while p-type semiconductors have a negative one. R: Metals have negatively charged carriers; p-type semiconductors have positively charged carriers.