Coulomb (C)

The coulomb (unit symbol: C) is the SI derived unit of electric charge (symbol: Q or q). This SI unit is named after Charles-Augustin de Coulomb. It is defined as the charge transported by a steady current of one ampere in one second:

1C = 1A x 1s

One coulomb is also the amount of excess charge on the positive side of a capacitance of one farad charged to a potential difference of one volt:

1C = 1F x 1V

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