1. The problem statement, all variables and given/known data Please refer to attachment for solution. Can you help with the following (please refer to attached). If I understand the problem, both magnetic fields B1 & B2 need to change direction, due to the change in current (I) by replacing the positive with a negative ion. Your thoughts, 2. Relevant equations Right hand rule for Current, Magnetic Field, Force. 3. The attempt at a solution Please refer to attached for solution.