1. The problem statement, all variables and given/known data A charged particle enters a uniform magnetic field and follows this circular path: http://img257.imageshack.us/img257/781/physsk4.png [Broken] Questions: 1: Is it positively or negatively charged, or is it electrically inert? 2: Why? 2. Relevant equations None. 3. The attempt at a solution Our class time has mostly focused on formulas and use of such; I'm a little unsure as to what I'm looking at here. Would much appreciate it if someone could Cliffs Notes what exactly is represented in the above figure.