Hi
Please have a look on this scanned page from a book (or, you can check the attachment):
http://img683.imageshack.us/img683/2193/imgdec.jpg
Please focus on where it says under the topic "Effect of alternating current (a.c.) on a capacitor":
Could you please help to conceptually understand it? Thanks.
Regards
PG
Please have a look on this scanned page from a book (or, you can check the attachment):
http://img683.imageshack.us/img683/2193/imgdec.jpg
Please focus on where it says under the topic "Effect of alternating current (a.c.) on a capacitor":
I understand that if the capacitance is small, then only a small amount of charge (from the supply) needs to flow into the capacitor before the capacitor's voltage equals the p.d. of the supply. But what I don't understand is frequency part. I know it can be proved easily with some math expressions. I'm unable to create a conceptual picture of this. Why would a small amount of charge be needed to equal the p.d. of the supply when the the frequency of the a.c. current is low?If the capacitance is small, or the frequency low, only a small amount of charge needs to flow onto the capacitor to equal the supply p.d. In other words, the current will be very low. High capacitance and high frequency gives high current.
Could you please help to conceptually understand it? Thanks.
Regards
PG
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