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Coulomb

Unit of electric charge
The coulomb is the unit of electric charge in the International System of Units. It is equal to the electric charge delivered by a 1 ampere current in 1 second and is defined in terms of the elementary charge e, at about 6.241509×10¹⁸ e. Wikipedia
1 C in: is equal to
Atomic units: ≈6.241509×1018 e
CGS units: ≘ 2997924580 statC
SI base units: A⋅s
Symbol: C
Unit system: SI