If the frequency of the AC voltage across an inductor is doubled, the inductive reactance of that inductor
A) increases to 4 times its original value.
B) decreases to one-half its original value.
C) decreases to one-fourth its original value.
D) increases to twice its original value.

Question

Quizplus · Accepted Answer

The inductive reactance (XL) of an inductor is directly proportional to the frequency (f) of the AC voltage across it, as given by the formula XL = 2πfL, where L is the inductance. Therefore, if the frequency is doubled, the inductive reactance also doubles.

If the Frequency of the AC Voltage Across an Inductor