Question

2
why
do
use earth
earth wire​

Answer 1

Answer:

Earthing is used to protect you from an electric shock. It does this by providing a path (a protective conductor) for a fault current to flow to earth. It also causes the protective device (either a circuit-breaker or fuse) to switch off the electric current to the circuit that has the fault.

Answer 2

Answer:

we use earth wire because when we touch any wire or switch, the current if the switch is not fine can harm us. To prevent this earth wire is there which takes the sudden shock or overflow of current down in the earth and thus the person is saved.