What you’ll learn2 learning objectivesChoose one objective for a focused lesson, or study the complete topic.18.3.1That, for a point outside a spherical conductor, the charge on the sphere• understand that, for a point outside a spherical conductor, the charge on the sphere may be considered to be a point charge at its centreSyllabus objective18.3.2Coulomb’s law F = Q1Q2 / (4πε0 r 2) for the force between two point charges• recall and use Coulomb’s law F = Q1Q2 / (4πε0 r 2) for the force between two point charges in free spaceSyllabus objective