What is earthing? Why is the earth pin in a plug top longer than neutral and line pins?

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Solution

Earthing is a process of connecting metallic bodies and transferring the excessive current to the earth then which is known as earthing.
Earth pin is longer than neutral & live pins because it differentiates from the other two pins.
It comes first in contact with the electrical circuit to protect from electric shock.
It provides safety and protects the electrical appliance from high voltage.

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