Question

What is earth wire ? How it works in our domestic circuit ?

Answer 1

To avoid the risk of electric shocks , the metal body of an electrical appliances is earthed.
Earthing means to connect the metal case of electrical appliances to earth at zero potential by means of earth wire.

In house hold circuits , we have three wires, the live wire, the neutral wire and earth wire.
One end of earth wire is buried in earth.
we connect the earth wire to metal casing of electrical appliances by using three pin plug.
If by chance, live wire touches any metal case parts of appliances then current passes directly to earth.
hence earthing is used as safety measure to prevent shock from metal objects.

Answer 2

Hey mate !!!

Earth wire :-

✴✴Earth wire is a wire which is coated with green colour

✴it protect us from getting the electric shock.

✴to avoid any risk of getting shock it is done.

✴Earth wire is uncovered material or conductor which have no plastic insulation on it.

✴the end of earth wire is connected to the earth.

✴Earth wire is give him because to make the potential is zero.

✴when the potential is zero there will be no flow of current from livewire.

✴almost every appliances consists of earth wire for example.

✴electric toaster.

✴refrigerator.

✴press machine.

✴and so on...

✴through the help of diagram I want to show the construction of earth wire

✴you can recognise easily Earth wire because it is thick.

hope it helps!!