1. Fuse:
1. Fuse is a strip of alloy wire which is made up of lead and tin with a very low melting point.
2. This can be connected to the circuit.
3. The fuse is usually designed to take specific amount of current.
4. When current passing through the wire exceeds the maximum limit, it gets heated up.
5. Due to low melting point, it melts quickly disconnecting the circuit. This prevents damage to the appliances.
2. Electric irons :
1. When current flows through the heating element, the heat energy developed is conducted to the heavy metal base, raising its temperature.
2. This energy is then used to press clothes.
