Question

what is short circuit? when does it occur​

Answer 1

Answer:

when the positive and negative terminals of a battery are connected with a low-resistance conductor, like a wire. With a low resistance in the connection, a high current will flow, causing the delivery of a large amount of energy in a short period of time.

Causes of Short Circuits

Short circuits can occur because: The wires are not insulated properly and touch each other. This increases the voltage as the current of the two wire sections combines at the point where they touch. Cuts and tears in the insulation can occur during installation or water can damage the wires.

Answer 2

Answer:

When live and neutral wire lose their resistance coating and come in contact with each other, it results in padding of huge current through it. This is known as short circuit. And in this way it occurs.