Can anyone offer me notes on electrostatics?
Electrostatics is the branch of physics that deals with the forces exerted by a static (i.e. unchanging) electric field upon charged objects. Quantum mechanics states that no electric charge is static outside absolute zero, however, the approximations that electrostatics provides of the phenomena involving charges are invaluable in many areas of science. Overview In electrostatics, charge need not be ‘static’ in the sense of unchanging. Instead ‘static’ implies that the dynamic coupling between electric and magnetic fields can be ignored. In electrostatics we study e-fields, voltage, and charge, but ignore any magnetic fields generated by the motion of these charges or that may be present for other reasons. Because of the electric field’s relationship to and interaction with magnetism, electrostatics is a subfield of electromagnetism. The electrostatic approximation The validity of the electrostatic approximation rests on the assumption that the electric field is irrotational: From Far
