How does a fuse help to prevent damage in case current exceeds the permissible value?

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Solution

The electric fuse is an important component of all domestic circuits. Overloading can occur when the live and the neutral wire come into direct contact. In such a situation, the current in the circuit abruptly increases. The use of an electric fuse prevents the electric circuit and appliance from a possible damage by stopping the flow of high electric current. When current exceeds the permissible value, the heating effect of current causes the fuse to melt, hence disconnecting the circuit.

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