An ac voltage source that has a frequency f is connected across the ends of an inductor. Which one of the following statements correctly indicates the effect on the inductive reactance when the frequency is increased to 2f?
A)The inductive reactance increases by a factor of two.
B)The inductive reactance increases by a factor of four.
C)The inductive reactance is unchanged.
D)The inductive reactance decreases by a factor of four.
E)The inductive reactance decreases by a factor of two.

Question

Quizplus · Accepted Answer

The inductive reactance (X_L) is given by the formula X_L = 2πfL, where f is the frequency and L is the inductance. When the frequency is doubled to 2f, the inductive reactance also doubles.

An Ac Voltage Source That Has a Frequency F Is