Question

What are the causes of heating effect of current??

Answer 1

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When a potential difference is applied across the ends of a conductor its electrons get accelerated from negative terminal to positive terminal. During the cause of their motion the electrons collide frequently against the atoms of conductor. At each collison part of kinetic energy of electron gets converted into heat and this increases the temperature of conductor.


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Answer 2

The phenomenon of production of heat in a resistor by the flow of an electric current through it is called heating effect of current or Joule heating. Cause of heating effect of current: ... The flow of electric charges across a cross-section of a conductor constitutes an electric current.