Question

What is the function of earth wire in electrical instruments? Who can't explain what is short circuited?

Answer 1

The earth wire is a very low resistance wire which is usually connected to the metal casing of the appliances . Earth wire is used to create a safe route for the current to flow through , if the the live wire ( live wire carries electriccurrent to the appliances)touches the casting.

A short circuit is a problem in an electrical circuit where two or more wires that are not supposed to come in contact with each other touch. A short circuit can result in a very high current flowing through the circuit. ... A "short circuit" also happens when there is a bypass of electrical current.