What is the term for the voltage produced from an inductor that opposes a change in current flow?

The term for the voltage produced from an inductor that opposes a change in current flow is indeed "Counter Electromotive Force." This concept arises from the fundamental property of inductors, which resist changes in current due to their ability to store energy in a magnetic field. When there is a change in current flowing through an inductor, it generates a voltage in the opposite direction to oppose that change. This phenomenon is critical in the behavior of inductors in circuits, especially in applications involving alternating current (AC) or switching scenarios.

Understanding counter electromotive force is essential for linemen, as it impacts the design and troubleshooting of electrical systems. It helps explain how inductors influence circuit behavior, especially in protecting against voltage spikes during rapid changes in current, which can be vital in ensuring system stability and protecting electrical equipment.

The other terms do not convey the same specific opposition to a change in current. Electromotive voltage refers generally to the voltage generated by a source that causes current to flow, while inductive reactance describes the opposition to the flow of alternating current due to the inductance without specifying the generating mechanism of that voltage. Back voltage is a more generic term that does not specifically highlight the inductor's role in opposing current change.