Glossary of electrical and electronics engineering: Difference between revisions

Revision as of 21:35, 27 January 2021

Revision as of 15:28, 25 February 2021

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{{defn|Heating in a conductor due to passage of current.}}

{{term|[[joule]]}}

{{defn|Symbol: J, is a [[SI derived unit|derived unit]] of [[energy]] in the [[International System of Units]].<ref>{{SIbrochure8th|page=120}}</ref> It is equal to the energy transferred to (or [[work (physics)|work]] done on) an object when a [[force]] of one [[Newton (unit)|newton]] acts on that object in the direction of the force's motion through a distance of one [[metre]] (1 newton metre or N⋅m). It is also the energy dissipated as heat when an [[electric current]] of one [[ampere]] passes through a [[Electrical resistance and conductance|resistance]] of one [[ohm]] for one second. It is named after the English physicist [[James Prescott Joule]] (1818–1889).<ref>[https://web.archive.org/web/20060413141420/http://education.yahoo.com/reference/dictionary/entry/joule American Heritage Dictionary of the English Language], Online Edition (2009). Houghton Mifflin Co., hosted by [https://web.archive.org/web/20010502171832/http://education.yahoo.com/ Yahoo! Education].</ref><ref>''The American Heritage Dictionary'', Second College Edition (1985). Boston: Houghton Mifflin Co., p. 691.</ref><ref>''McGraw-Hill Dictionary of Physics'', Fifth Edition (1997). McGraw-Hill, Inc., p. 224.</ref>}}

{{defn|The [[International System of Units|SI]] unit of work; one joule is of the order of the energy dissipated when an apple falls off a table top.}}

{{glossary end}}