What is the function of a fuse in an electrical circuit?

A fuse serves as a safety device in an electrical circuit by disconnecting the circuit during overloads. When the current flowing through the circuit exceeds the rating of the fuse, the metal inside the fuse melts, breaking the circuit and preventing excessive current from damaging other components or causing potential hazards such as electrical fires. This protective function is critical for maintaining safe operation and preventing equipment damage, making it an essential element in many electrical systems.

The other options do not accurately describe the function of a fuse. Amplifying current or enhancing voltage involves active components like amplifiers or transformers, while providing a path for current typically refers to conductors or cables rather than a protective device.