One coulomb per second is equivalent to one ampere. An ampere is the standard scientific unit of measurement for electrical current. It is commonly shortened to "amp".
Coulombs are the basic scientific unit of charge. They are named after Charles-Augustine Coulomb, a French scientist who was the first to mathematically describe electrical forces of attraction and repulsion. Amperes are used as the unit of choice for current, rather than coulombs, because current refers to the flow of charges over time. Coulombs are merely a measurement of charge at a specific point in time and space. Coulombs are commonly defined in terms of amps, rather than the reverse, because for most purposes, scientists and electricians are more interested in the movement of charges rather than the quantity of a static charge.