Where are the north and south poles located on a disc magnet?

• A. Along the edge
• B. At the center
• C. On the curved surface
• D. On the flat faces

Answer: (D)

Disc magnets are magnetized through their thickness, meaning the magnetization runs from one flat circular face to the opposite flat face. The ends where this magnetization finishes become the poles, so the north and south poles appear on the flat faces. The curved side surface isn’t a pole because the magnetic field lines exit and enter through the faces, not along the curved edge. The center isn’t a separate pole either; it’s just part of the magnet’s body. So the poles are located on the flat faces.