IEVref: 121-11-26 ID: Language: en Status: Standard Term: (electric) potential difference Synonym1: Synonym2: Synonym3: Symbol: Definition: difference between the electric potentials at two points NOTE – The electric potential difference Vb − Va between two points a and b is equal to the negative of the line integral, along any path linking points a and b, of the irrotational vector $\left(E+\frac{\partial A}{\partial t}\right)$, where E is the electric field strength, A a magnetic vector potential and t the time: ${V}_{\text{b}}-\text{ }\text{\hspace{0.17em}}{V}_{\text{a}}=\text{\hspace{0.17em}}-\text{ }\underset{{r}_{a}}{\overset{{r}_{b}}{\int }}\left(E+\frac{\partial \text{\hspace{0.17em}}A}{\partial \text{\hspace{0.17em}}t}\right)\cdot \text{d}r$ where ra and rb are the position vectors for a and b, respectively, and dr is the vector line element. Publication date: 1998-08 Source: Replaces: Internal notes: 2017-06-02: Cleanup - Remove Attached Image 121-11-261.gif 2017-06-02: Cleanup - Remove Attached Image 121-11-262.gif CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: