First slide

Electrons and holes in semiconductors

Question

The forbidden energy band gap in conductors, semiconductors and insulators are $E G_{1}, E G_{2} a n d E G_{3}$ respectively. The relation among them is

Easy

A

$E G_{1} < E G_{2} < E G_{3}$
B

$E G_{1} > E G_{2} > E G_{3}$
C

$E G_{2} > E G_{1} < E G_{3}$
D

$E G_{3} > E G_{1} > E G_{2}$

Solution

In insulators, the forbidden energy gap is very large.
In case of semiconductor, it is moderate and
In conductors the energy gap is zero.

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