Explain why increase in current results in higher temperature of the wire.

Current is a measure of the rate of change of charged electrons going through the wire. Therefore, when the current increases more electrons are passing through the wire in a unit time. Thus, their average velocity called drift velocity, increases and they posses more kinetic energy. Then the electrons pass this energy to ions inside the wire through, increasing their kinetic energy. As the temperature is proportional to the kinetic energy of the ions, increase in energy causes rise in temperature. Key words:definition of currentdefinition of drift velocityrise in kinetic energy of ionsdefinition of temperature