Question

Which part of an electric appliance is earthed and why?

Answer 1

Hey Friend,

The metal casing of an appliance is always earthed!

Explanation -
If live wire comes in contact with its metallic case due to breaking of insulation the appliance acquires the high potential of live wire and if a person touches it, he will get a fatal shock because current flows through his body to earth.
Hence, earthing is done to the metallic casing of an appliance.

Hope it helps!