Semiconductor E...

Basic materials used in the present solid state electronic devices like diode, transistor, ICs, etc are

Depletion region (space charge) is formed because

The conductivity of P – type semiconductor is due to

In an N-P-N transistor, P-type crystal is

Domestic power supply in India is

In the case of metals the valence and conduction bands have

In a p-n junction, as the diffusion process continues the width of the depletion zone

An N-type Ge is obtained on doping the Ge- crystal with

A p- type semiconductor can be obtained by adding

In a semiconductor crystal, if current flows due to breakage of crystal bonds, then the semiconductor is called

Hole is a vacancy or lack of an electron and can travel through the semiconductor material. It can

Which of the following is not a semiconductor?

Majority current carriers in N – types are

The depletion layer in the p-n junction is caused

When n –type of semiconductor is heated

In a pure, or intrinsic, semiconductor, valence band holes and conduction-band electrons are always present

In a semiconductor, the forbidden energy gap between the valance band and the conduction band is of the order of

A solid having uppermost energy – band partially filled with electrons is called

Doping of semiconductor is the process of

Hole is

When a P- N junction is reversed biased, the flow of current across the junction is mainly due to

The main difference between conductors, semiconductors and insulators is because of

The number of valence electrons in a good conductor is generally

In the middle of the depletion layer of a reverse biased p-n-junction, the

The output from a full wave rectifier is

Motion of hole is a convenient way of describing

When the conductivity of a semiconductor is only due to breaking of the covalent bonds, the semiconductor is called

Electrons are forbidden in a band (in a crystal) called the

The difference in variation of resistance with temperature in a metal and semiconductor is due to

A piece of copper and another of germanium are cooled from room temperature to 80 K. The resistance of