2.20 answers
2.20 answers
30 November 2010
14:43
· 2.20 identify common materials which are electrical conductors or insulators, including metals and plastics
Insulators | Conductors |
Air | Metal |
Plastic (used to encase electric wires) | Copper (used in wires) |
Rubber (used to encase older plugs) | Brass (used in pins on plugs) |
paper | Water (don't use your hair drier in the bath!) |
Dry wood | Wet wood |