1.

Write the mathematical expression for Joule's law of heating.

Answer»
  • When an electric current passes through a conductor for some time, the conductor gets heated up. 
  • Thus heating of a conductor due to the flow of electric current through it is known as Joule's law of heating. 

Heat generated H = i2Rt

where i is the amount of current flowing though the conductor, R is the resistance of conductor and t is the time for which the current has flown.



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