Question

The north pole of a bar magnet is moved close to the north pole of another bar magnet that is suspended by a thread. How does the energy stored in the magnetic field change?(1 point) Responses The energy stored in the field increases because the magnet moves in the direction of the field. The energy stored in the field increases because the magnet moves in the direction of the field. The energy stored in the field increases because there is no friction. The energy stored in the field increases because there is no friction. The energy stored in the field decreases because there is no friction. The energy stored in the field decreases because there is no friction. The energy stored in the field decreases because the magnet moves in the direction of the field.

Answer 1

The correct response is that the energy stored in the field decreases because the magnet moves in the direction of the field.

When the north pole of one magnet is brought close to the north pole of another magnet, they repel each other. The work done against this repulsion requires energy, and as the two like poles move apart, the potential energy stored in the magnetic field decreases. The statement captures the essential points about the change in energy: as they repel each other, there is a decrease in energy stored in the magnetic field.