In an RC circuit, the capacitive reactance is:
A) decreases as the frequency increases.
B) inversely proportional to the frequency.
C) inversely proportional to the capacitance.
D) all of these.

Question

Quizplus · Accepted Answer

The capacitive reactance in an RC circuit is given by Xc = 1/(2πfC), where f is the frequency and C is the capacitance. From this equation, it is clear that Xc decreases as the frequency increases (option A), as Xc is inversely proportional to f. Similarly, Xc is inversely proportional to C (option C), which means that it increases as the capacitance decreases. Therefore, option D is correct as it encompasses both option A and option C.

In an RC Circuit, the Capacitive Reactance Is