Question

Define fuse and its uses.

Answer 1

1. In electrical and electronics, a fuse is defined as an electrical safety device that provides over-current protection to the functional electrical circuit.
2. The fuse wire is chosen such that it has a low melting point.
3. When a large current flows through the circuit, the fuse wire gets heated up due to the heating effect of the current and melts.
4. Due to the melting of the fuse wire, the circuit is broken and the current ceases to flow through the circuit.
5. In this way, the fuse wire helps to protect the devices from getting damaged due to excessive current.

The major uses of fuse are:

1. It prevents short circuits.
2. It acts as a barrier between the human body and electric current
3. It prevents overload and blackouts.