These sources discuss magnetic force, explaining it as the interaction between moving electric charges or magnetic materials and magnetic fields. They cover the historical development of understanding magnetism and its relationship with electricity, including key figures and discoveries. The texts provide formulas for calculating magnetic force on both individual charges and current-carrying conductors, highlighting the vectorial nature of the force and its perpendicularity to velocity and magnetic field. Several sources also detail the Right and Left-Hand Rules for determining the direction of this force and offer practical examples and exercises related to these concepts and their application.