The diagram shows a bar magnet at rest on a smooth horizontal surface. A length of soft-iron wire is held parallel to the magnet.
The wire is released. What happens?
The wire moves away from the magnet.
The wire moves towards the magnet.
The wire’s centre stays in its present position and the wire rotates through 90° in a clockwise direction.
The wire’s centre stays in its present position and the wire rotates through 90° in an anticlockwise direction.
