BBC1 年
Conductors and insulators
The electricity cables we have in our homes are made up of three smaller wires. These are normally made from copper, because it’s a good conductor, and covered with a plastic sheath to insulate ...
BBC1 年
Conductors and insulators
The electricity cables we have in our homes are made up of three smaller wires. These are normally made from copper, because it’s a good conductor, and covered with a plastic sheath to insulate ...