MOTION OF A CHARGED PARTICLE IN A MAGNETIC FIELD By now, you know that a charged particle moving in a magnetic field is acted upon by a magnetic force. Furthermore, the motion of the charged particle is determined by Newton's laws. This time you will learn about S circular motion of the charged particle, as well as the other motion brought about by the charged particle P entering a magnetic field. Exercise 3. Visualize and Explain To help you visualize the motion of a charged particle in a magnetic field, consider Figure 7. As O shown in the figure, a particle with positive charge q is at point O, moving with velocity ? in a uniform Figure 7. A charged particle moves in a plane perpendicular to a uniform magnetic field ?. magnetic field? directed into the plane of the figure. Specifically, this shows the orbit of a charged particle in a uniform magnetic field (Retrieved from https://web.njit.edu/~levyr/Physics_121/chapt er29.ppt)