Question

. Choose the correct option.
Electric conduction through
semiconductor is due to:
(A) electrons
(B) holes
(C) none of these
(D) both electrons and holes​

Answer 1

Answer:

A semiconductor has two types of charge carriers i.e. holes and electrons. The conductivity of a semiconductor is sum of conductivities of holes and electrons i.e. σ=eni(μh+μe).

where, ni = intrinsic concentration

μh = mobility of holes

μe= mobility of electrons

Therefore, electrical conduction in a semiconductor is due to holes and electrons both.

Answer 2

Answer:

D) BOTH ELECTRONS AND HOLES

Explanation:

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