PHYS1002 Study Guide - Final Guide: Vacuum Permeability, Ferromagnetism, Magnetic Domain
Document Summary
Chapter 21 magnetic forces and magnetic fields. 21. 1 magnetic fields: magnets have north and south poles. Like electric charges, like poles repel each other, and unlike poles attract. Unlike electric charges, we have never found a monopole magnets. Always have a north and a south pole. If you split a magnet in half, each of the two halves will have two poles. Surrounding a magnet, there is a magnetic field roughly analogous to the electric field. The direction of the magnetic field at any point in space is the direction indicated by the north pole of a compass needle at that point. 21. 2 the force that a magnetic field exerts on a moving charge. Two conditions must be met for a charge to experience a magnetic force when placed in a. Magnetic field o the charge must be moving o the movement must have a component. Middle finger magnetic force: this is fo(cid:396) a positive cha ge.
