Question

earthing is necessary for metal surfaced electrical instruments. why?​

Answer 1

Answer:

Why is it necessary to earth metallic appliances? The metallic body of electric appliances is connected to the earth using earth wire so that any leakage of electric current is transferred to the ground. This prevents any electric shock to the user.

Answer 2

Answer:

The metallic body of electrical appliances is connected to earth using earth wire so that any leakage of electric current is transferred to ground. This prevents user to get any electrical shock