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 decreases by a factor of four.
B)It decreases by a factor of eight.
C)It increases by a factor of two.
D)It increases by a factor of four.
E)It increases by a factor of eight.

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, since reactance is directly proportional to frequency.

A Simple Ac Circuit Consists of an Inductor Connected Across