whats the equation for electromagnetism and can u please explain wat each symbol means?

Answer 1

Electromagnetism is just a term assigned to various situations involving both electricity and magnetism. There isn't just one equation for electromagnetism. Forces, fields, energy, etc., all have different equations, so if you could be more specific as to what you're looking for that could help narrow down some answers.

Answer 2

What is it with these ambiguous questions asking what the equation is for something or other? There are four equations which describe all of classical electromagnetism called Maxwell's Equations. A fifth is needed for electrodynamics called the Lorentz force equation. Try Wiki.