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IEVref:121-11-27ID:
Language:enStatus: Standard
Term: voltage
Synonym1: (electric) tension
[Preferred]
Synonym2:
Synonym3:
Symbol: U
Definition: scalar quantity equal to the line integral of the electric field strength E along a specific path linking two points a and b:

U ab = r a r b Edr MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdi9qqqj=hEeeu0lXdbb a9frFj0xb9Lqpepeea0xd9s8qiYRWxGi6xij=hbba9q8aq0=yq=He9 q8qiLsFr0=vr0=vr0db8meaabaGacmGadiWaaiWabaabaiaafaaake aacaWGvbWaaSbaaSqaaGGaaiaa=fgacaWFIbaabeaakiabg2da9maa pehabaaccmGaa4xraiabgwSixlaa=rgacaGFYbaaleaacaGFYbWaaS baaWqaaiaa=fgaaeqaaaWcbaGaa4NCamaaBaaameaacaWFIbaabeaa a0Gaey4kIipaaaa@48DB@

where ra and rb are the position vectors for a and b, respectively, and dr is the vector line element

NOTE 1 – In the case of an irrotational field strength, the voltage is independent of the path and equal to the negative of the electric potential difference between the two points:

U ab =( V b V a ) MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbbjxAHXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeqabiGaciGacaqadmaadaqaaqaaaOqaaiaadwfadaWgaaWcbaacbaGaa8xyaiaa=jgaaeqaaOGaeyypa0JaeyOeI0YaaeWaaeaacaWGwbWaaSbaaSqaaiaa=jgaaeqaaOGaeyOeI0IaaGjbVlaadAfadaWgaaWcbaGaa8xyaaqabaaakiaawIcacaGLPaaaaaa@4207@

NOTE 2 – The name "voltage", commonly used in the English language, is an exception from the principle that a quantity name should not refer to any name of unit.


Publication date:2002-01
Source:
Replaces:
Internal notes:2012-07-20: Publication date incorrect since that of the standard: 1998-08. Corrected to that of the Amd 1:2002-01
. JGO

2017-06-02: Cleanup - Remove Attached Image 121-11-271.gif

2017-06-02: Cleanup - Remove Attached Image 121-11-272.gif
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