Electrodynamics is a branch of physics that deals with the study of the interactions between electric charges and electric and magnetic fields. It is based on the fundamental principles of electricity and magnetism, as described by James Clerk Maxwell's equations.
 
These fundamental concepts and principles form the basis of electrodynamics and provide a framework for understanding and analyzing various phenomena involving electric and magnetic fields, such as the behavior of electrical circuits, the generation and transmission of electromagnetic waves, and the interaction of light with matter.