Insulators are poor conductors of electricity because
A)there is a small energy gap between the valence band and the next higher band in which electrons can collect.
B)there is a large energy gap between the valence band and the next higher band in which electrons can collect.
C)the valence band has a few vacancies for electrons.
D)the valence band is only partly full.
E)None of these is correct.

Question

Quizplus · Accepted Answer

Insulators have a large energy gap between the valence band and the next higher band in which electrons can collect, which means that electrons do not have enough energy to jump to the higher band and conduct electricity.

Insulators Are Poor Conductors of Electricity Because