A rate of flow of one coulomb per second is called what?

The term describing a flow of one coulomb per second is known as one ampere. This unit of electric current is fundamental in the field of electrical engineering and physics. An ampere quantifies the amount of charge—measured in coulombs—passing through a circuit in a given time, specifically one second. This definition arises from the relationship established by the International System of Units (SI), where one ampere is defined precisely as one coulomb of electrical charge moving past a specified point in a circuit each second.

Understanding this concept is essential as it lays the groundwork for comprehending the behavior of electrical circuits and the principles of electromagnetism. The other options—volt, watt, and ohm—represent different electrical concepts: volts measure electric potential, watts measure power, and ohms measure resistance. These units, while related in the context of electrical equations, specifically serve different roles and cannot be interchanged with the concept of electric current measured in amperes.