PHYS 1B Chapter 22: Textbook Notes
Document Summary
Phys1b textbook notes chapter 22: magnetic forces and magnetic fields. Greeks discovered magnetite attracted pieces of iron. Electric charges can be isolated; magnetic poles are always found in pairs: no matter how many times a permanent magnet is cut, each piece always has a north and south pole. Region of space surrounding a moving charge includes a magnetic field in addition to the electric field. B: the magnetic force is proportional to the speed of the particle. Your thumb shows the direction of the magnetic force on a positive particle: or, point your fingers in the direction b, with v coming out of your thumb. 22. 3 motion of a charged particle in a uniform magnetic field. As particle changes the direction of its velocity in response to the magnetic force, the magnetic force remains perpendicular to the velocity if force is always perpendicular to velocity, the path of the particle is a circle.
