Description: After studying this lesson, you should be able to learn about, basic properties of electric charges, the concepts of quantisation and conservation of charge, Coulomb’s law of force between electric charges, electric field due to a charge at rest and draw electric lines of force, electric dipole, dipole moment and the electric field due to a dipole, Gauss’ theorem and derive expressions for the electric field due to a point charge, a long charged wire, a uniformly charged spherical shell and a plane sheet of charge, Gauss’ theorem and derive expressions for the electric field due to a point charge, a long charged wire, van de Graaff generator functions