fuse
Definition
A fuse is a safety device that is used to protect electrical circuits from overloads. It is a small, cylindrical device that contains a strip of metal with a low melting point. When too much current flows through the fuse, the metal strip melts and breaks the circuit.
Fuses are typically rated in amperes, which is the unit of measure for electrical current. The rating of a fuse indicates how much current it can safely carry before it melts.
Fuses are installed in electrical circuits in series with the load. This means that the fuse is the only thing that is between the load and the power source.
When too much current flows through the fuse, the metal strip heats up and melts. This breaks the circuit and prevents the current from flowing any further.
Fuses are an important safety device. They help to prevent fires and other electrical hazards.
There are two main types of fuses: cartridge fuses and slow-blow fuses. Cartridge fuses are the most common type of fuse. They are made of a ceramic or glass tube that contains a metal strip. Slow-blow fuses are designed to melt more slowly than cartridge fuses. They are used in circuits that are subject to occasional overloads.
Fuses should be replaced regularly. They should also be replaced if they become damaged.
How can the word be used?
The electrician used a fuse to join the two wires together.
Different forms of the word
Noun: fuse, fuses.
Verb: fuse, fused, fusing.
Adjective: fused.
Etymology
The word "fuse" comes from the Latin word fusus, which means "melted". The Latin word fusus is related to the verb fundere, which means "to melt".
Question
Why is a fuse found in a plug?
AQA Science Exam Question and Answer
Question:
Explain the purpose and functioning of a fuse in an electrical circuit and its importance in preventing electrical hazards.
Answer:
A fuse is a safety device used in electrical circuits to protect against overcurrent and potential electrical hazards. It consists of a thin wire or strip made of a material with a low melting point, typically made of copper or an alloy. When the current passing through the circuit exceeds the rated limit of the fuse, the wire heats up due to increased resistance and eventually melts, breaking the circuit and interrupting the flow of electricity.
The purpose of a fuse is to prevent damage to electrical equipment and wiring caused by excessive current, which could result from short circuits or overloading. By breaking the circuit when needed, the fuse safeguards appliances, preventing them from overheating or catching fire.
Overall, fuses are essential safety components in electrical systems, providing a cost-effective and reliable means of protecting both equipment and individuals from potential electrical hazards.