How is one ampere defined in relation to electric current?

One ampere is defined as the flow of one coulomb of electric charge per second. This definition is grounded in the relationship between electric charge, current, and time. Specifically, the unit of charge, the coulomb, is defined in such a way that when a charge of one coulomb moves through a conductor in one second, the current flowing through that conductor is exactly one ampere.

This definition is fundamental in electrical engineering and physics, providing a standardized measurement for electric current. Understanding this concept is crucial for analyzing circuits and electrical systems, as it relates to the behavior of charges in a conductor.

The other choices reflect misunderstandings of the relationship between charge and time or introduce unnecessary complexity. For example, the notion of a flow of charge per minute does not align with the standard definition, which emphasizes the per-second measurement that is core to understanding amperes. Similarly, basing the definition on resistance does not accurately capture the fundamental relationship established in the definition of an ampere.