Question

When does short circuiting takes place?

Answer 1

HINT: A short circuit is a circuit in which a low resistance connection between the two conductors that are supplying electrical power to a circuit. A short circuit happens when the ends of a circuit are connected by a lower resistance path as compared to that of the circuit. Short circuits would generate an excess of voltage streaming and excessive flow of current in the power source. The electricity will flow through a short route and cause a short circuit.

Complete step-by-step answer:
Short circuiting can happen when the live and the neutral wires of a domestic circuit come in contact accidently. As a result of short circuit, the resistance of the circuit decreases to a very small value and the current increases enormously. It results in heating up of the fuse wire and breaking up of the circuit. It may also cause fire. A short circuit can happen when there is any part of the wire which carries electricity or which touches another part of this circuit or any conducting material, this will give us an electricity a pathway that will offer less resistance than a circuit is designed to handle. When a short circuit occurs, it should be attended quickly, as they can cause serious damage.

NOTE: Short circuit occur in most often cases, we can suppose that there is a line which are going from source to load which can carrying some amount of power and having impedance Z. if suddenly a short circuit is happened then impedance Z becomes low because of short circuit and the current remain high. The best example is, in house when there are two wire phases and the neural gets melted due to excessive temperature as the insulation melt conductor gets short circuit and immediately gets an MCB trip. We can overcome short circuits with the help of circuit breakers.