The magnetic induction lines come out of the North Pole and enter the South Pole, forming a closed curve from the South Pole to the North Pole inside the magnet. The two magnetic induction lines never intersect. The earth itself is a huge magnet. Because the geographic poles do not coincide with the geomagnetic poles, the north-south direction indicated by the magnetic needle is not the north-south direction of geography, but slightly deviated. Every magnet has the North Pole and the South Pole, and its two poles always exist in pairs. When we make strong magnets for customers, these permanent polar magnets have no pole mark if there is no special requirement. But if you want to ask how to determine north and south pole of magnet, here are some ways you can follow：
1. A Marked Magnet: The North Pole of one magnet will be attracted to the South Pole of another magnet.
2. Magnetic Pole Identifier: With a small painted neodymium bar magnet suspended in the middle of the round plastic housing, this pole identifier not only indicates the polarity but also shows the direction of magnetic field lines in a certain extent. While revolving around a magnet, the middle small magnet in the identifier will rotate all the time.
3. A Compass: The earth can be pictured as a gigantic magnet, but the geographic North Pole actually is the South Pole of a neodymium magnet. For this reason, the North Pole of the magnet will point to the South Pole of the compass.
4. Electronic Pole Identifier: Simply point the tip of the electronic pole identifier pen at any place of a magnet, press the button and the LED will light to show the polarity.
Thank you for reading our article and we hope it can help you know howto determine north and south pole of magnet well. If you want to find more about magnet products, we advise you to visit Stanford Magnets for more information.
Stanford Magnets is a leading supplier of magnet products across the world, who has been involved in R&D, manufacturing, and sales of permanent magnets since the 1990s. It provides customers with high-quality rare earth permanent magneticproducts such as neodymium magnets, and other non-rare earth permanent magnets at a very affordable price.