ABSTRACT
This chapter begins with a discussion about magnets and how the magnetic poles, north and south, are similar to the positive and negative electrical charges, except that the magnetic poles cannot be separated. Because of the inability to separate magnetic poles, the magnetic force cannot be defined in a way similar to gravity and electrostatics and must be defined with the force on electrical current. The magnetic field is introduced in the context of this magnetic force on an electrical current and several examples are provided. The transition is made from electrical current to flowing charge to introduce the magnetic force on a moving charged particle. Several examples are provided, all of which follow the same process as outlined in previous chapters. This chapter concludes with a brief introduction of Ampere’s Law as another geometric connection between a field and a physical quantity. There is an appendix in this chapter that explains the method of applying the cross-product to the calculation of the magnetic force on either an electrical current or a moving charged particle.
