Question

A fuse is used in an electric circuit to __________.

• A. Break the circuit when excessive current flows through the circuit
• B. Break the circuit when power gets off
• C. Indicate if the current is flowing uninterrupted
• D. Complete the circuit for flow of current

Answer 1

The correct option is A Break the circuit when excessive current flows through the circuit

A fuse is a small, thin conductor designed to melt and for the purpose of breaking a circuit in the event of excessive current. During a short circuit, excessive current flows through the circuit which may damage the device and components. They are always connected in series with the components to be protected from overcurrent, so that when the fuse blows it will open the entire circuit and stop current through the components.