# Strange current

## Main Question or Discussion Point

How is the current that pushes electricity through the space between the two plates of the capacitor called?

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Stephen Tashi
Are you thinking of "displacement current"?

Yes, thank you.

How is this current connected to the turbulent current and the surface current?

Svein
No current is flowing "through" the capacitor. Current flowing onto one plate creates a charge which sets up an electric field which again repels some charge on the other plate. Therefore you can "load" the capacitor with a charge by connecting it to a voltage source. You can then transport this charge by disconnecting the capacitor and moving it somewhere else.

davenn
But why and how does AC pass through the capacitor?

davenn
Gold Member
2019 Award
But why and how does AC pass through the capacitor?
It doesn't, because AC is cycling, the polarity of the charge on each of the plates of the capacitor is also constantly alternating
at the frequency of the AC signal (voltage)

Dave

Svein