Question

How does a fuse protect an electrical circuit?

Answer 1

The concept Used: Heating effect of current

Step 1: Fuse wire:

• Fuse is a piece of thin wire having a low melting point and high resistance, usually made up of tin and lead alloy.
• It is based on the heating effect of current.
• A fuse is always connected in the live wire and in series with the electrical circuit.

Step 2: How fuse protects an electric circuit,

• When an electric circuit gets overloaded or short-circuited, due to low melting point, the fuse in the live wire gets heated up and melts which in turn produces a gap in the live wire, so the current cannot flow through it, hence further damage will be prevented and the appliances will be saved.