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Coulomb
Value of 1 coulomb, amount of electric charge at 1 ampere per 1 second
General information
Unit system	SI base unit
Unit of	electric charge
Symbol	C

The coulomb (sometimes written C) is the SI unit of electric charge. It is named after Charles-Augustin de Coulomb.

A coulomb is a quantity of electric charge. The movement of electric charge is called current in an electric circuit. For example, a flashlight bulb that has a current of one ampere will pass one coulomb of charge every second. So in ten seconds, ten coulombs have passed through the light bulb.^[source?]

In an electric wire the charge that moves is in a particle called the electron. Each electron has a very small electric charge of negative one elementary charge. The elementary charge is the smallest electric charge found in a stable particle. A coulomb is equal to 6,241,509,629,152,650,000 elementary charges. The coulomb was named in honor of Charles-Augustin de Coulomb who worked on understanding electric charge in the late 1700s.^[source?]

Technical Definition:

1 coulomb is the amount of electric charge carried by a current of 1 ampere flowing for 1 second.