As the frequency of the AC voltage across a capacitor approaches zero, the capacitive reactance of that capacitor
A) approaches zero.
B) approaches unity.
C) approaches infinity.
D) becomes negative.

Question

Quizplus · Accepted Answer

The capacitive reactance (Xc) of a capacitor is given by the formula Xc = 1/(2πfC), where f is the frequency of the AC voltage and C is the capacitance. As the frequency (f) approaches zero, the denominator of this expression approaches zero, making the value of Xc approach infinity.

As the Frequency of the AC Voltage Across a Capacitor