ELECTRONIC DEVICES AND CIRCUITS QUIZ

Hard drawn copper

Induction hardened copper

Pure annealed copper

Copper containing traces of silicon

Forward bias

Reverse bias

Zero bias

Zero or reverse bias

None of these

Germanium

Mixture of silicon and germanium

Silicon

100

99

1.01

0.99

Increases with heavy doping

Is independent of applied voltage

Decreases with light doping

Is increased under reverse bias

20 A

1 A

100 A

10 A

All electrons will leave

Diode will emit light

All holes will freeze

Excessive heat may damage the diode

Loses its charge easily

Has lower energy than the electron in the valence band

Jumps to the top of the crystal

Has higher energy than the electron in the valence band

A is true but R is false

A is false but R is true

Both A and R are true and R is correct explanation of A

Both A and R are true but R is not a correct explanation of A

Reverse bias

Zero or forward bias

Zero bias

Forward bias