Distinguish between good conductors, resistors and insulators. Name two good conductors, two resistors and two insulators.

The substances which have very low electrical resistance are called good conductors. E.g., Copper and Aluminium.

The substances which have comparatively high resistance than conductors are known as resistors. E.g., Nichrome and Manganin.

The substances which have infinitely high electrical resistance are called insulators. E.g., Rubber, Wood, Plastic.