Question

give difference between conductor and insulator

Answer 1

Basis For Comparison

Conductor

Insulator

Definition

Material which permits the electric current or heat to pass through it.

Restrict the electric current or heat to pass through it.

Electric Field

Exist on the surface but remain zero inside the conductor.

Do not exist on insulator.

Magnetic Field

Store energy

Do not store energy

Potential

Remain same at all the point on conductor.

Remain zero.

Thermal Conductivity

High

Low

Covalent bond

Weak

Strong

Conductivity

Very high

Low

Resistance

Low

High

Electrons

Freely move

Do not move freely

Resistivity

Vary from high to low

High

Temperature coefficient

Positive temperature coefficient of resistance

Negative temperature coefficient of resistance

Conduction band

Full of electrons

Remain empty

Valence Band

Remains Empty

Full of electrons

Forbidden gap

No forbidden gap

Large forbidden gap

Examples

Irons, aluminum, silver, copper, etc.

Rubber, wood, Paper, etc.

Application

For making electrical wires and conductor

As a insulation in electrical cables or conductor, for supporting electrical equipment etc

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Answer 2

Conductor passes heat or electricity well ex. metals while insulators do not pass heat or electricity well ex. plastic