Question

What is the opposition to the flow of AC produced by a magnetic field with generated back voltage (EMF) called?

A. Inductive reactance.
B. Capacitive reactance.
C. Mutual inductance.

Answer 1

The opposition to the flow of AC produced by a magnetic field with generated back voltage (EMF) is called inductive reactance.

Step-by-step explanation:

The opposition to the flow of AC produced by a magnetic field with generated back voltage (EMF) is called inductive reactance.

Inductive reactance is the opposition of an inductor to a change in current in an AC circuit. It is calculated using Ohm's law for an inductor.

For example, when a sinusoidal voltage is applied to an inductor, the voltage leads the current by a 90° phase angle.