consider two wires infinitely long one placed along the x axis and the other along the y axis ata dist a above the x axis. i hope u can picturise it well because its very essental.
the horizontal one carries a curent in the +ve x dir. and the vertical one carries current in the +ve y dir.
now the vertical wire exp. a force to the right (due to other wire) but the vertical one will not experience any force.
isnt newtons third law violated???
when i worked out using flemings left hand rule, i found that both the wires were experiencing forces, the vertical one has a force towards the right and the horizontal one had a force upward - in the +ve y direction! i hope i understood ur question correctly, if not pls correct me!
im sorry i didnt frame the question correctly which i had in mind.
here it is
consider a point directly under the vertical wire ,then tell me the forces acting on that specific point due to the vertical wire and vice verse