I understand the basic forces moving charges experience in magnetic fields. I dont; however, understand how these these charges would interact with particles uninfluenced by the magnetic field. 1. If a charged particle is moving perpendicular to a uniform magnetic field, it will follow a circular path. Does the particles motion create a magnetic field that interacts with magnetic field that is applying a force to it? For example, will the magnetic field strength inside the circular path be at a higher density than outside the path of the particle? 2. If an electron is moving in a circular path in a magnetic field, experiencing a lorentz force. But, just inside it's circular path, the magnetic field strength falls off to zero. A positive particle with a velocity perpendicular to this path, originating from the center of the circle, is uninfluenced by the magnetic field. How will the electron and positive particle interact in the area before the positive charge enters the magnetic field? 3. How do oppositely charged particles influence each other if they are moving perpendicular to each other? Is it purely attraction or are their complex magnetic interactions that explain their movements. What terms can I search to research this interaction?