How is one henry defined in terms of current change?

One henry is defined as the inductance that results in the generation of one volt when the current changes by one ampere per second. This definition captures the relationship between inductance, current, and voltage. Specifically, it illustrates that if you have a coil with an inductance of one henry, a change in the current flowing through that coil by one ampere will induce a voltage of one volt across the coil.

This relationship is foundational in understanding how inductors work in electrical circuits. Inductance is the property of an electrical circuit that opposes changes in current. The induced voltage is directly proportional to the rate of change of current, highlighting the fundamental nature of inductors in energy storage and transformation in AC circuits.

In contrast, the other choices do not accurately describe the definition of one henry. For instance, a constant current or a steady-state situation described in other options does not demonstrate the inductive property associated with changing current and voltage, which are critical for the understanding of inductors and their behavior in circuits.