# Why isn't the force modelled which confines excess charge to remain inside a conductor?

Excess charge placed on a conductor distributes itself on the surface of a conductor. But why isn't the force which confines the charge to remain there, modelled in some way?

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It is modelled in some way: by Maxwell's equations in fact! Have a look at farside.ph.utexas.edu/teaching/em/lectures/node58.html for a good discussion of this. – John Rennie May 15 '12 at 18:32