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Saturday, September 25, 2021

09-25-2021-1323 - Joule heating

Joule heating, also known as resistiveresistance, or Ohmic heating, is the process by which the passage of an electric currentthrough a conductor produces heat.

Joule's first law (also just Joule's law), also known as the Joule–Lenz law,[1] states that the power of heating generated by an electrical conductor is proportional to the product of its resistance and the square of the current:

Joule heating affects the whole electric conductor, unlike the Peltier effect which transfers heat from one electrical junction to another.

A coiled heating element from an electric toaster, showing red to yellow incandescence

https://en.wikipedia.org/wiki/Joule_heating

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