Each learning path is one chapter: a guided route through a topic, one small course at a time. Pick a class to see its chapters in order.
A comb pulled through dry hair picks up scraps of paper without touching them. Electric charge and the field around it explain this pull at a distance. In this chapter you learn the force between charges, how the electric field describes it, how dipoles behave, and how Gauss's law finds the field of a sphere, a wire and a sheet in a few lines. Python plots field lines and sums the force of many charges.