Electric Charges −

• Conservation of charge

• Coulomb’s law-force between two point charges

• Forces between multiple charges

• Superposition principle

• Continuous charge distribution

Electric field, electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in uniform electric field.

Electric flux, statement of Gauss’s theorem and its applications to find field due to infinitely long straight wire, uniformly charged infinite plane sheet and uniformly charged thin spherical shell (field inside and outside).