Summary

Electric Charge comes in two kinds:

The electric force between two charges Q and q is given by Coulomb's Law,

We can describe the electric force as the result of an electric field,

F=EqThe electric field

Edue to a point charge Q is given byAn electric field

originateson apositivecharge.Likewise, an electric field terminates on a negative charge.

The E-field inside a conductor is zero.

The electric potential energy of two point charges Q and q is given by

Potential energy is a scalar, so the PE due to more than a single electric charge is

(c) Doug Davis, 2002; all rights reserved

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