University of Colorado
University of Colorado: Ph Et Interactive Simulations: Charges and Fields
Move point charges around on the playing field and then view the electric field, voltages, equipotential lines, and more. It's colorful, it's dynamic, it's free.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Charges and Fields
Arrange positive and negative charges in space and view the resulting electric field and electrostatic potential. Plot equipotential lines and discover their relationship to the electric field. Create models of dipoles, capacitors, and...
Georgia State University
Georgia State University: Hyper Physics: Equipotential Lines
At this site from the Georgia State University, the equipotential lines around several different configuration of charges are shown and described. Excellent graphics and clear discussion.