Electrical conductivity is the ability of a material to conduct electricity. Take an electrical circuit consisting of a bulb, cell, wire and a switch. Connect wood to the circuit. The bulb does not glow indicating that wood is a poor conductor of electricity. Connect a paper roll to the circuit. The bulb does not glow, indicating that paper is also a poor conductor of electricity. Take a metal like iron and connect it in the same circuit. The bulb glows indicating that iron is a good conductor of electricity. Similarly, other metals like copper, silver, etc. also make good conductors of electricity. Hence, we can say that most metals are good conductors of electricity.