NEET Physics Question - Semiconductor Physics - Properties of Semiconductors

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

Reason (R): The effective charge carriers in p-type semiconductors are electrons and in n-type semiconductors are holes.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

All semiconductors (p-type or n-type) have a negative temperature coefficient of resistance, so (A) is false. In p-type semiconductors, majority carriers are holes, and in n-type, they are electrons. Reason (R) swaps these, so it is also false. Thus, both (A) and (R) are false.

Rankers Physics

Temperature Coefficient and Carriers in Doped Semiconductors

Solution:

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