IN THE FOLLOWING CONTENT YOU WILL GET AN INSIGHT INTO THE WORLD OF ELECTRODYNAMICS ....... LETS START THE JOURNEY TO LEARN THE CONSERVATION LAWS IN ELECTRODYNAMICS... FOLLOWING CONTENT WILL COVER..... Poynting’s theorem Energy conservation in electrodynamics The Maxwell stress tensor (which gets rather messy) Momentum conservation in electrodynamics Poynting’s theorem Suppose a collection of charges and currents lies entirely within a volume V. If they are released at some point in time, electromagnetic forces will begin to do work on them. Consider, for instance, the work done by the forces on charges and currents in an infinitesimal volume d τ during a time dt: Derivation of the Theorem We begin with the differential form of Ampere’s law: NEWTONS THIRD LAW IN ELECTRODYNAMICS AND MAXWELL'S STRESS TENSOR :- FOR THE COMPLETE DERIVATION OF ENERGY CONSERVATION IN ELECTRODYNAMICS AND MAXWELL'S STRESS TENSOR CLICK HERE Magnetic forces do no (net) wor...