# What is Coulomb in physics?

In the field of physics, the Coulomb (often denoted by the symbol ‘C’) can be defined as the unit of electric charge. As per the International System of Units (often abbreviated to SI), one Coulomb of charge is equal to the charge transported by an electric current of constant magnitude in one second of time. It is also equal to the amount of excess charge that arises in a capacitor of one farad when it is charged to a potential difference of one volt. The SI unit of electric charge is named after the French physicist and military engineer Charles Augustin de Coulomb. Note that electric charges are often denoted by the symbol Q or by the symbol q. The SI base units of the Coulomb are ampere.second (or A.s).
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