First slide

Classification of Metals, semiconductors and insulators

Question

A 0 K temperature, a p-type semiconductor

Moderate

A

has few holes and few free electrons
B

has equal numbers of holes and free electrons
C

has few holes but no free electrons
D

does not have any charge carrier

Solution

At absolute zero, a p-type semiconductor has holes as charge carriers and .behaves like an ideal insulator. Hence, it has a few holes in valence band but no free electrons.

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