IEVref: 121-11-27 ID: Language: en Status: 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: ${U}_{\text{ab}}=\underset{{r}_{\text{a}}}{\overset{{r}_{\text{b}}}{\int }}E\cdot \text{d}r$ 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: ${U}_{\text{ab}}=-\left({V}_{\text{b}}-\text{\hspace{0.17em}}{V}_{\text{a}}\right)$ 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 CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: