PHYS 102 Lecture Notes - Lecture 21: Lorentz Force, Circular Motion, Kinetic Energy

• School: McGill University
• Department: Physics
• Course: PHYS 102
• Professor: Nikolaos Provatas

Document Summary

Direction for a positive charge can be found suing the right hand rule. Curl up fingers along magnetic field vector, and your thumb will point towards the force. Always perpendicular to plane formed by velocity and b vector. You can determine the plane formed by velocity and b vectors, and the perpendicular line to that plane will be the force. Circular motion of a charge in a magnetic field. Moves with velocity v that is perpendicular to a uniform magnetic field b The magnetic force always points toward the center of the circular path executed by the charge. Lorentz force on a charge is the superposition of both the magnetic force and the electric force. The two effects are calculated independently, each yielding its own vector force, and the two are then added vectorially to yield the total lorentz force on a charge . Both qe and (qv x b) are vectors. Qe causes the circular motion to translate horizontally.