Definition of Joule's law
: either of two statements in physics: (1) the rate at which heat is produced by a steady current in any part of an electric circuit is jointly proportional to the resistance and the square of the current (2) the internal energy of an ideal gas depends only upon its temperature irrespective of volume and pressure — compare joule-thomson effect
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Origin and Etymology of joule's law
after J. P. Joule
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