Magnetic force due to a current-carrying wire: A paradox and its resolution, Denise C. Gabuzda, Am. J. Phys., 55(5), May 1987
A straightforward investigation at an introductory level of the interconnection between electricity and magnetism initially leads to the paradoxical result that a charge at rest with respect to a current carrying wire feels a magnetic force due to that current. Students may benefit from a presentation of this paradox and its resolution.