Electrical Properties of soilds
Solids exhibit electrical conductivities that extend from 27 orders of magnitude ranging from 10 – 20 to 10 7 ohm – 1 m – 1.
Conductors:
o
o
Solids with conductivities ranging between 10 4 to 10 7 ohm – 1 m – 1 are conductors.
Metals have conductivities in the order of 10 7 ohm – 1 m – 1 are good conductors.
o For example, Iron, Copper, Aluminum.
Fig. Metal is used at the tip of the plug that is inserted into the socket
Insulators:
o Solids with very low conductivities ranging between 10 – 20 to 10 –
10 ohm – 1 m – 1. o For example, Wood, plastic, cloth, glass.
Fig. Wood and plastics are also solids but are insulators