List of electromagnetism equations

This article summarizes equations in the theory of electromagnetism.

Definitions


Here subscripts e and m are used to differ between electric and magnetic charges. The definitions for monopoles are of theoretical interest, although real magnetic dipoles can be described using pole strengths. There are two possible units for monopole strength, Wb (Weber) and A m (Ampere metre). Dimensional analysis shows that magnetic charges relate by qm(Wb) = μ0 qm(Am).

Electric quantities


Contrary to the strong analogy between (classical) gravitation and electrostatics, there are no "centre of charge" or "centre of electrostatic attraction" analogues.

Electric transport

Electric fields

Magnetic quantities
Magnetic transport

Magnetic fields

Electric circuits
DC circuits, general definitions

AC circuits

Electric fields
General Classical Equations

Magnetic fields and moments
General classical equations

Electric circuits and electronics
Below N = number of conductors or circuit components. Subscript net refers to the equivalent and resultant property value.