With a hairdryer, we don’t have to wait for our hair to dry.
Inside the hairdryer, electricity travels on a pathway of wire. The electricity travels easily on most of the wire in the pathway. This is called conducting electricity. The path is open. The electrons in the wire are free to move.
But some metals resist, or slow down, the electric current flowing through the hairdryer. When the electrons slow down, they bump into one another as they move through the wire.
Then the wire heats up. The harder they bump and push, the hotter the wire gets.
When you plug in a hairdryer and turn it on, electricity travels through it. It powers a tiny fan. Then the electricity travels to coiled wire made of resistant metals. These wires heat up. The fan blows heat from these wires out through a vent. This is the hot air that dries your hair.
Inside an electric hairdryer, there is a coil of wire that heats up. The fan blows the heat out to dry your hair.
Picture Credit : Google