# Definition:Coulomb (Unit)

## Definition

The coulomb is the SI unit of electric charge.

It is defined as being:

The amount of electric charge carried in one second by a constant current of one ampere.

### Symbol

$\mathrm C$

The symbol for the coulomb is $\mathrm C$.

Its $\LaTeX$ code is \mathrm C .

### Base Units

The SI base units of the coulomb are:

$\mathrm C := \mathrm A \, \mathrm s$

where:

$\mathrm A$ denotes amperes
$\mathrm s$ denotes seconds (of time).

## Source of Name

This entry was named for Charles-Augustin de Coulomb.