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

Answer

Those substances which have very low electrical resistance are called as good conductors. E.g., copper and aluminium.
Those substances which have comparatively high resistance than conductors are known as resistors. E.g., nichrome and manganin.Those substances which have infinitely high electrical resistance are called insulators. E.g., rubber and wood.

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