Force on a current carrying conductor in a magnetic field
Andre Marie Ampere (1775–1836) suggested that the magnet also exert an equal and opposite force on the current carrying conductor.
The rod will experience a force, when it is placed in magnetic field, in a perpendicular direction to its length.
The direction of the exerted force will be reversed if the direction of current through the conductor is reversed.
If we change the direction of field by inter changing the two poles of the magnet, again the direction of exert force will change.
Therefore, the direction of exerted force depends on
- direction of current
- direction of magnetic field lines.