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Question

A person connects too many electrical appliances to a single socket in his house. When all these electrical appliances connected to the single socket are switched on at the same time, the electric fuse of circuit blows off.
(a) What is the process of connecting too many electrical appliances to a single socket known as?
(b) Which effect of electric current is responsible for the blowing off of fuse wire?

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Solution

(a) It is known as overloading. When too many appliances are connected in the same socket, they draw a large amount of current. Which exceeds the maximum current rating of the fuse wire. That's why the fuse wire blows off.

(b) Heating effect of electric current is responsible for the blowing off the fuse wire. When a large amount of current passes through the circuit, it creates a large amount of heat. If the current exceeds the maximum current rating of the fuse, then the heat is enough to melt the fuse wire.


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