Write the mathematical expression for Joule’s law of heating.
Joule’s law of heating states that the heat produced in a conductor is directly proportional to
(i) the square of the current I through it,
(ii) its resistance R and
(iii) the time t , for which current is passed.
Therefor, the mathematical expression of Joule’s law of heating is:
H = I 2 Rt
- H = Produced Heat
- I = Current flowing through the device
- t = Time of current flow
- R = Resistance of the appliance