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 decreases because there is no friction.
The energy stored in the field decreases because there is no friction.

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 the magnet moves in the direction of the field.
The energy stored in the field decreases 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.

Answer 1

When the north pole of a bar magnet is moved close to the north pole of another bar magnet, they experience a repulsive force due to like poles repelling each other. In this situation, the energy stored in the magnetic field actually changes due to the work done against this repulsive force.

As one north pole approaches the other north pole, work is done against the repulsion between the two magnets. Since energy is required to bring the two like poles closer together, the energy stored in the magnetic field decreases as they repel each other.

Therefore, the correct response would be:

**The energy stored in the field decreases because the magnet moves in the direction of the field.**