The diagram shows a flat, rectangular coil placed between the poles of a magnet. There is a current in the coil that makes it turn in the direction shown in the diagram.
Which change would make the coil turn in the opposite direction?
decreasing the current in the coil
increasing the number of turns on the coil
reversing both the direction of the current in the coil and the poles of the magnet
reversing only the direction of the current in the coil
