Copy of Coulomb's Law Vector Field Viewer
This is a simulation of two point-charges in a plane. Units of charge are microCoulombs, and distance is in meters. Slider 1 and 2 determine the amount of charge on the points A and B respectively. Slider 3 sets the density of test charges used to visualize the vector field. And slider 4 sets the "sensitivity" of the vector field by varying the test charge. Enjoy :D