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 the electricity current.

This clip is from:
Bitesize Secondary, Science 1
First broadcast:
28 February 2008

Use the clip to recap conductors and insulators, or to introduce the idea of free electrons in conductors. Lead into the role of different conducting and insulating materials in electronics and electrical systems.