Capacitor and ac?

1. Nov 6, 2008

ragavcit

HI,
How come an AC flows through a capacitor when there is no continuity inbetween its plates??how come the resistance offered by a capacitor changes with frequency??

Last edited: Nov 6, 2008
2. Nov 6, 2008

cabraham

In 2 words: "displacement current". That should get you started.

Claude

3. Nov 6, 2008

Staff: Mentor

This should help as an introduction: http://en.wikipedia.org/wiki/Capacitor

And as I mentioned in your nearby Inductor thread, it's the "impedance" that changes with frequency, not its "resistance".