If there is no current flowing in the conductors that are parallel to each other, the magnetic forces do not obey Newton’s third law.
Do magnetic forces obey Newton’s third law. Verify for two current elements located at the origin and located at (0,R,0). Both carry current I.
Do magnetic forces obey Newton’s third law. Verify for two current elements located at the origin and located at (0,R,0). Both carry current I.