Which statement about magnetic field lines around a bar magnet is accurate?

Which statement about magnetic field lines around a bar magnet is accurate?

• A. They exit the north pole and re-enter at the south pole
• B. They exit the south pole and re-enter at the north pole
• C. They radiate outward from both ends without looping
• D. They do not exist around magnets

Answer: (A)

Magnetic field lines show the direction of the field: outside a bar magnet they leave the north pole and enter the south pole, forming a continuous loop that closes inside the magnet from south back to north. That is exactly what the statement describes, so it’s the best description of the external pattern around a bar magnet. The lines do exist around magnets and do not radiate outward from both ends; inside the magnet they loop from south to north, completing the loop.

Magnetic field lines show the direction of the field: outside a bar magnet they leave the north pole and enter the south pole, forming a continuous loop that closes inside the magnet from south back to north. That is exactly what the statement describes, so it’s the best description of the external pattern around a bar magnet. The lines do exist around magnets and do not radiate outward from both ends; inside the magnet they loop from south to north, completing the loop.