ELECTRONIC DEVICES AND CIRCUITS QUIZ

Diode will emit light

All holes will freeze

All electrons will leave

Excessive heat may damage the diode

Violet portion of spectrum

Green portion of spectrum

White portion of spectrum

Red portion of spectrum

Germanium

Mixture of silicon and germanium

Silicon

None of these

Loses its charge easily

Has higher energy than the electron in the valence band

Has lower energy than the electron in the valence band

Jumps to the top of the crystal

Mica

Mineral oil

Paraffin wax

Air

In arbitrary direction

Antiparallel to magnetic field

In the direction of current

Normal to both current and magnetic field

Intensity of incident radiation

None of these

Frequency of incident radiation

Both frequency and intensity of incident radiation

Majority as well as minority carriers in both regions

Holes in P-region only

Majority carriers in both regions

Free electrons in N-region only

None of these

An electron can have at room temperature

Must be given to an electron move to conduction band

A hole can have at room temperature

Holes and electrons

Electrons

Ions

Holes