Question

My mother was operating washing machine on Sunday morning. Suddenly, she saw a spark coming out of the electric board and the electric current in the house failed. An electrician was called to look into the matter. What should he have noticed.

Answer 1

1. When electrician was called, he checked circuit and found that circuit catches fire due to short circuit.
2. He observed that live wire and neutral wire came in direct contact which resulted in short circuit.
3. Because short circuit resistance of the circuit becomes very small and hence huge amount of current flows through it.
4. It ultimately produces a large amount of heat and raises the temperature. As a result circuit catches fire.