Final answer:
A fuse is a part of the electrical system that protects the circuit from being destroyed in case of a short by breaking the connection when current exceeds the rated value.
Step-by-step explanation:
A fuse is the part of the electrical system that is designed to keep the circuit from being destroyed in case of a short.
A fuse consists of a short piece of wire between two contacts. When a current passes through the wire that is greater than the rated current, the wire melts, breaking the connection. This protects the rest of the circuit from excessive currents.
For example, if a short occurs in a circuit with a fuse, the fuse will blow and break the circuit, preventing excessive current from flowing and potentially damaging the circuit.