CBSE
Class 10 Class 12
| Basis of Comparison | Conductor | Insulator |
| Definition | Material which allows the electric current or heat to pass through it is known as a conductor. | Material which restricts the electric current or heat to pass through it is known as Insulator. |
| Electric Field | It exists on the surface of the conductor but remains zero inside the conductor. | Do not exist on the insulator. |
| Potential | Remain same at all the point on the conductor. | Remain zero. |
| Thermal Conductivity | High | Low |
| Covalent bond | Weak | Strong |
| Conductivity | Very high | Low |
| Resistance | Low | High |
| Electrons | Freely moves in conductors. | Do not move freely |
| Resistivity | Vary from high to low | High |
| Temperature coefficient | Positive temperature coefficient of resistance | Negative temperature coefficient of resistance |
| Examples | Irons, aluminium, 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. |
