01974 IUPAC Gold Book - electromotive force 10.1351/goldbook.E01974 E01974 current quantity 1 Energy supplied by a source divided by the electric charge transported through the source. For a galvanic cell it is equal to the electric potential difference for zero current through the cell. electric charge https://goldbook.iupac.org//terms/view/E01923 electric potential https://goldbook.iupac.org//terms/view/E01935 Green Book, 2nd ed., p. 58 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf) PAC, 1996, 68, 957. 'Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)' on page 971 (https://doi.org/10.1351/pac199668040957) https://goldbook.iupac.org/terms/view/E01974/html https://goldbook.iupac.org/terms/view/E01974/json https://goldbook.iupac.org/terms/view/E01974/plain Citation: 'electromotive force' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.E01974 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-06-12T05:59:53+00:00