Question

what is short circuiting

Answer 1

Hi friend here is your answer.

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A short circuit occurs when part of a wire carrying current touches another wire or part of the circuit and gives the electricity a path of less resistance.

For example, if a wire with faulty insulation becomes exposed and touches a metal light switch, current can flow along the light switch and result in a shock.

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Answer 2

when fuse wire(mcb trips no tension for it)
heatens up due to overload of electeicity
blastes then its called short circuiting