How Fast Does Electricity Travel?

Electrons travel at varying speeds depending on the type and thickness of the conductor. The flow of electrons is slowed down, as the electrons have to pass through billions of atoms of the conductor. However, it is the wave of electric current that travels at the speed of light and not the electrons.

The resistivity of different conductors to the flow of electricity is different. This is why aluminum and copper are better conductors than iron and steel.