### Glossary of engineering - Wikipedia

The coulomb (symbol: C) is the International System of Units (SI) unit of electric charge. It is the charge (symbol: Q or q ) transported by a constant current of one ampere in one second : 1 C = 1 A ⋅ 1 s {displaystyle 1~{text{C}}=1~{text{A}}cdot 1~{text{s}}}