Primary
Coulomb (C) ○◂｜Definition｜1st｜20251119205401-00-⌔
Coulomb
The coulomb (symbol: C) is the unit of electric charge in the International System of Units (SI).12 It is defined to be equal to the electric charge delivered by a 1 ampere current in 1 second, with the elementary charge e as a defining constant in the SI.21
Printed 2026-06-28.
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Link to original Footnotes
International Bureau of Weights and Measures (Dec 2022), The International System of Units (SI) (PDF), vol. 2 (9th ed.), ISBN 978-92-822-2272-0, archived from the original on 18 October 2021 ↩ ↩2
BIPM (20 May 2019). “Mise en pratique for the definition of the ampere in the SI”. BIPM. Retrieved 2022-02-18. ↩ ↩2
Secondary
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