Joule's law

noun

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

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for Joule's law

after J. P. Joule

Learn More About Joule's law

Dictionary Entries Near Joule's law

Joule's cycle

Joule's law

Joule effect

See More Nearby Entries 

Statistics for Joule's law

Cite this Entry

“Joule's law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Joule%27s%20law. Accessed 8 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Name that Thing: Flower Edition

Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!