⚡ Charge Bench: Coulomb Fields, Equipotentials, Gauss Flux and a Grounded Conducting Sphere

Place point charges on a bench and watch their electric field lines, equipotential lines and potential landscape. Add a grounded or isolated metal sphere to see induced charge and the image-charge force, wrap a Gaussian sphere around chosen charges to verify Gauss's law numerically, and release a charged dust grain to follow its energy.