Material : Flexible copper wire, stand,electric cell, a horseshoe magnet with a strong magnetic field.Procedure : Using the stand, fix the copper wire so that it passes through the poles of the horse-shoe magnet as shown in the figure 4.17. Connect the circuit as well. What do you observe? Whenever a current is not flowing through the wire, it remains straight ( position A). When the current flows from top to bottom, the wire bends and comes into position C.If the current direction is reversed, i.e. it flows from the bottom to the top end, the wire bends but comes in the position B. This means the direction of the force on the wire is perpendicular to both the magnetic field and the direction of the current. Here, the direcțion of magnetic field is from N to S, (H). In this experiment it is noted that whenever a current flows through a conductor in the presence of magnetic field, a force is exerted on the conductor. If the direction of the current is réversed, the direction of the force also gets reversed. If the magnet is kept reversed, i.e. its South pole is brought at the position of its North pole and its North pole brought to the position of its South pole, what will happen?