I am getting confused. electrons, protons, which finger goes where in the left hand rule... agh!!! lol, im muddling myself all up. i understand the rule (well i hope i do by now as that means the rest of my homework is wrong) but the last question of my h/w is almost killing me. heres the question (well the last part as i manages the beginning) any help will be wonderful, thanks Yasmin xxx A beam of protons moving at constant speed is directed into a uniform magnetic field in the same direction as the field. Describe and explain how the path of the beam in the field would have differed if the beam had been directed into the field at a slight angle to the field lines.