ELECTRONIC DEVICES AND CIRCUITS QUIZ

Mineral oil

Air

Paraffin wax

Mica

False

True

The number of free electrons increases but the number of holes decreases

The number of free electrons and holes increase by the same amount

The number of free electrons and holes increase but not by the same amount

The number of free electrons increases

True

False

Has lower energy than the electron in the valence band

Loses its charge easily

Jumps to the top of the crystal

Has higher energy than the electron in the valence band

Second band

Third band

First band

Conduction band

Only for the negative half cycle of the input signal

For less than fourth cycle

For full cycle

Only for the positive half cycle of the input signal

Wideband gap semiconductor

An indirect band gap semiconductor

Direct band gap semiconductor

Narrowband gap semiconductor

A hole can have at room temperature

An electron can have at room temperature

Must be given to an electron move to conduction band

None of these

Is less noisy

Has higher input resistance

All of these

Has better thermal stability