Comment: "When a metal is heated, there is current (ie flow of e) flowing too" "We all know that metals are good conductors of heat. When one end of the metal is heated, the electrons will rapidly transfer the energy to the other end. This energy transfer often involves the flow of electrons from one end of the metal bar to the other. And since we know current is the rate of flow of electrons, the fact that there IS a flow of electrons (in the conduction process) means that current is actually flowing in the bar." Any comments for the above paragraph? Physicsforums rock!