What is another name for the induced voltage that opposes current flow?

The term that describes the induced voltage opposing current flow is commonly known as counter-electromotive force (CEMF). This phenomenon occurs in situations where a voltage is generated as a result of changing magnetic fields, especially in inductors and motors. When current flows through an inductor, a magnetic field is created. If the current changes, the magnetic field also changes, generating a voltage that opposes the change in current, effectively acting against the applied voltage.

This is consistent with Lenz's law, which states that the direction of the induced current will always be such that it opposes the change causing it. Therefore, counter-electromotive force is fundamentally crucial for maintaining system stability and efficiency in electrical circuits. In contrast, terms like back voltage and voltage drop do not capture the specific nature of this opposing voltage in the context of induced effects. The power factor, while related to efficiency in alternating current systems, does not pertain to the concept of opposing induced voltages.