Question
Define the terms: (i) Thermal conductivity (ii) Electrical conductivity.
Solution
(i) Thermal conductivity is the ability of a material to conduct heat from the hot end to the cold end. Silver is the best conductor of heat. So it has the highest thermal conductivity.
(ii) Electrical conductivity is the ability of a material to conduct electricity. A material which allows electric current to pass through it with minimum loss is called a good conductor of electricity. Silver is the best electric conductor followed by copper, gold and aluminium.
