A fuse protects an electric circuit by which of the following?

Correct option is A

(a) Overloading

A fuse protects an electrical circuit from overloading by breaking the circuit when excessive current flows through it.

• It contains a wire that melts when the current exceeds the safe limit, preventing damage to the circuit and components.

Information Booster:

1. Fuses are designed to protect electrical devices and prevent fires caused by overcurrent.
2. A blown fuse indicates a fault in the circuit and requires replacement.
3. Overloading occurs when too many devices are connected to the same circuit, causing the current to exceed its capacity.
4. Circuit breakers are also used for overcurrent protection and can be reset after tripping, unlike a fuse.