Question

Assertion (A): A fuse wire is the weakest point in the distribution of electric energy in a household circuit.

Reason (R): Fuse melts when an electric circuit is overloaded or short circuited.

Options

• Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

• Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).

• Assertion (A) is false, but Reason (R) is true.

• Assertion (A) is true, but Reason (R) is false.

Answer 1

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Explanation:

A fuse wire is deliberately made the weakest point in a circuit. When the circuit is overloaded or short-circuited, the large current heats the fuse wire and melts it, breaking the circuit. This prevents damage to the wiring and appliances.