Magnetic Pole Reversal: Explaining the Paradox

[endoparasite]

If the magnetic field lines are going from north to south pole then why when we cut a magnet from middle the two cutting edges become like poles. Common sense says that one edge should be north pole and other should be south . Can anyone explain ?

 

[Born2bwire]

The cut edges can't be like poles. That would mean that one of the new magnets would have to either be a monopole or instantly flip its polarity.

 

[HallsofIvy]

All we can say is that "common sense" is right in this case. If you cut a bar magnet into two pieces, the two cut edges do NOT become like poles. The S and N poles of the original magnet become S and N poles of the new magnets, the cut ends become N and S poles. What made you think they became like poles?

 

[MagnetDave]

If the magnetic field lines are going from north to south pole then why when we cut a magnet from middle the two cutting edges become like poles. Common sense says that one edge should be north pole and other should be south . Can anyone explain ?

I cannot explain this any more than I can explain why the sun sets in the north, water is dry, or sound moves faster than light. It is literally the opposite of what happens.

 

[pmacias]

The phenomenon of magnetic pole reversal is a natural occurrence that has been observed and studied by scientists for many years. It is caused by the movement and flow of molten iron in the Earth's outer core, which generates the planet's magnetic field. This magnetic field can be thought of as a giant bar magnet, with a north and south pole. However, unlike a bar magnet, the Earth's magnetic field is not fixed and can change over time.

When a magnet is cut in half, the magnetic field lines are disrupted and the two new ends of the magnet will align themselves with the Earth's magnetic field. This means that the end that was previously the north pole will now align with the Earth's south pole, and vice versa. This is because the Earth's magnetic field is the dominant force, and the smaller magnet will align itself with it.

Additionally, the magnetic field lines of a magnet do not simply go from one end to the other, but rather form a continuous loop. This means that when a magnet is cut in half, the new ends will still have both north and south poles, but the dominant polarity will be determined by the Earth's magnetic field.

In conclusion, the paradox of why both ends of a magnet appear to have the same polarity after being cut in half is due to the Earth's magnetic field being the dominant force. This phenomenon has been extensively studied and observed, and is a natural occurrence that is essential for the functioning of our planet.