See equipotentials with probes
http://www.physicsclassroom.com/Physics-Interactives/Static-Electricity/Electrostatics-Landscapes
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Category: Electric potential
See 3D potential and force around charges
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Electrical potential energy
http://physics.bu.edu/~duffy/HTML5/potential2.html
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Categories
Space Around Charge Lab
Charge and field
http://www.thephysicsaviary.com/Physics/Programs/Labs/SpaceAroundChargeLab/index.html
N.B. Preview is created automatically, doesn't always work and may capture splash screens.