The behavior of magnetic fields is described by a set of mathematical equations called Maxwell’s equations, which also encompass electric fields. Magnetic fields are generated by moving electric charges (electric currents) and by the intrinsic magnetic properties of certain materials, such as ferromagnetic materials (e.g., iron, cobalt, and nickel). The magnetic field is often represented by the symbol B and is measured in units of Tesla (T) or Gauss (G), where 1 T = 10,000 G.
It is an invisible force that surrounds magnets and electric currents, exerting forces on other magnetic materials and moving charges. A magnetic field is a vector field that describes the magnetic influence of electric currents and magnetic materials.
