Magnetic field lines within the magnet

Understand magnetic field lines

We deal with magnetic field lines in this article. I will explain to you what is meant by magnetic field lines, how to draw them and what properties magnetic field lines have. You will also find practice exercises at the end of the article. This content belongs to our field of physics / electrical engineering.

First a picture for everyone who has never seen a magnet. The next graphic shows a horseshoe magnet. This has a north pole (red) and a south pole (green). We'll take a closer look at what this means in a moment. First the picture:

Start with the definition from a magnetic field: Something arises around a magnet that is called Magnetic field designated. In this area, the magnet exerts forces on other ferromagnetic substances (iron, nickel, cobalt, etc.). For example, if there is another magnet nearby, you can see that the two magnets attract or repel each other.


Make field lines visible

Each magnet has two Pole, a north pole and a south pole. These names come from the compass needles, which point with their ends to the magnetic poles of the earth. The same poles repel each other, different ones attract each other.

Magnetic field lines run between the north and south poles of a magnet. These field lines are not visible to the eye. Around make magnetic field lines visible, one uses, for example, iron filings. You bring these chips close to the magnet and see how they align.

Since one cannot see field lines with the eye, but one still likes to visualize them, they are simply drawn in pictures by magnets. The next graphic shows the magnetic field lines using the example of a horseshoe magnet. We will take a closer look at what properties these have in the next section.

Example horseshoe magnet:


Magnetic field lines: properties

Magnetic effects can only be determined in the area of ​​the magnetic field. Magnetic fields or magnetic field lines have a number of properties that should be shown here:

  • The magnetic field lines run outside of the magnet from the north pole to the south pole.
  • Inside the magnet, the field lines run from the south pole to the north pole.
  • Magnetic field lines are closed curves with no beginning and no end.
  • The direction of the field lines corresponds to the direction in which a sample north pole would move.
  • Magnetic field lines do not intersect.
  • The force is greatest in the vicinity of the poles, which is why the field lines are densest there.

The exercises on the magnetic field lines follow. Alternatively, you can learn more about electrical engineering and magnetism in the electrical engineering overview or the physics overview.

Exercises / exercises magnetic field lines

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