While advanced physics involves complex Maxwell's equations , the fundamental "For Dummies" version focuses on a few key laws :
In the simplest terms, electromagnetism is the physical interaction between electrically charged particles. For a long time, scientists thought electricity and magnetism were two different things. It wasn't until the 19th century that they realized they are two sides of the same coin. Deals with stationary or moving charges. Electromagnetism For Dummies Pdf