Question

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.

Options

• If both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

• If both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A).

• If Assertion (A) is true and Reason (R) is false.

• If both Assertion (A) and Reason (R) are false.

Answer 1

If both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A).

Explanation:

The temperature coefficient of resistance in these materials is determined by the change in carrier concentration, not the polarity of the charge carriers.