Noun
English Wikipedia has an article on:magnetostaticsWikipedia
magnetostatics (uncountable)
(physics) The study of static magnetic fields.
The behaviour of electric and magnetic fields, whether in cases of electrostatics, magnetostatics, or electrodynamics (electromagnetic fields), is governed by Maxwell's equations. Source: Internet
Electrostatics deals with electric charges at rest, electrodynamics with moving charges, and magnetostatics with magnetic poles at rest. Source: Internet