Re: capacitance of a disk

["John S. Denker" <jsd@MONMOUTH.COM>]

At 04:28 PM 2/10/01 -0500, Carl Mungan wrote:

> When charge is dumped onto a conducting disk, why does more
> charge accumulate at the center than at the edges?

It doesn't.  More goes to the edges.

> I'm looking for an
> intuitive answer, either in terms of the repulsive forces between the
> free electrons or in terms of how more charge nearer the center
> "clearly" minimizes the potential energy of the system.

They move to the edges because of repulsive forces between the mobile charges.
This minimizes the energy of the system.
Those two statements are equivalent.