Electromagnetic Energy Conservation

This lecture covers the concept of displacement current, energy flow, charge conservation, and electromagnetic energy density. It explains the necessity of displacement current for the existence of electromagnetic waves and discusses the conservation of charge and energy in electromagnetic fields. The lecture also delves into the energy density and power flux density, emphasizing the dissipated power density and the rate of work on charged particles. Mathematical identities related to energy density and power flux density are presented for a better understanding.