PHYS 142 Lecture Notes - Lecture 23: Circular Motion, Cyclotron
29 Apr 2015
School
Department
Course
Professor
Document Summary
Phys 142: electromagnetism and optics - lecture 23: magnetism part 3. The figure shows a positive charge moving in a plane that perpendicular to a uniform magnetic field. Since f is always perpendicular to v, the charge undergoes uniform circular motion. This motion is called the cyclotron motion of a charged particle in a magnetic field. Electrons undergoing circular cyclotron motion in a magnetic field. You can see the electrons" path because they collide with a low density gas that then emits light. Consider a particle with mass m and charge q moving with speed v in a plane that is perpendicular to a uniform magnetic field of strength b. Thus, the radius of the cyclotron orbit is: There"s no force on a current-carrying wire parallel to a magnetic field. A current perpendicular to the field experiences a force in the direction of the right-hand rule. The magnetic force on a current-carrying wire is:
