What is the definition of a coulomb and how is it related to the concept of electric charge?

A coulomb is the unit of electric charge in the International System of Units (SI). It represents the amount of electric charge that flows through a conductor in one second when a current of one ampere is flowing. Electric charge is the fundamental property of matter that causes it to experience a force when placed in an electric field. The coulomb is used to quantify the amount of electric charge present in a system or flowing through a circuit.