A simple ac circuit consists of an inductor connected across the terminals of an ac power source. If the frequency of the ac source is decreased by a factor of four, what happens to the reactance of the
Inductor?
A) It increases by a factor of eight.
B) It decreases by a factor of eight.
C) It increases by a factor of four.
D) It decreases by a factor of four.
E) It increases by a factor of two.

Question

Quizplus · Accepted Answer

The reactance of an inductor (XL) is given by XL = 2πfL, where f is the frequency. If the frequency is decreased by a factor of four, the reactance decreases by the same factor, because reactance is directly proportional to frequency.

A Simple Ac Circuit Consists of an Inductor Connected Across