Question

A voltage having the waveform of a sine curve is applied across a capacitor. When the frequency of the voltage is increased, what happens to the current through the capacitor?

(a) Increases

(b) Decreases

(c) Remains same

(d) Is zero

I have been asked this question in homework.

My enquiry is from Miscellaneous Examples on Fourier Series topic in division Fourier Series of Signals and Systems

Answer 1

Correct choice is (a) Increases

For explanation I would say: The current through the capacitor is given by,

IC = ωCV cos (ωt + 90°).

As the frequency is increased, IC also increases.