I'm currently looking at the right hand rule for magnetism, and have got myself a bit mixed up. I was originally taught to use the left hand rule, with the acronym FBI: Force for the thumb, B field for the first finger, and current for the middle finger.
Since current flows in the opposite direction to electrons, shouldn't this work for magnetic forces on moving partciles? Yet all my textbooks use the right hand rule.
A summary of which rule is appropriate for which case would be ideal!