The motor rotates with the help of magnets and magnetic force

Publisher:温暖拥抱Latest update time:2024-08-13 Source: elecfans Reading articles on mobile phones Scan QR code
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Around a permanent magnet with a rotating shaft, ① the magnet rotates (to generate a rotating magnetic field), ② according to the principle that N poles and S poles attract each other and like poles repel each other, ③ the magnet with the rotating shaft will rotate.


This is the basic principle of motor rotation.

The basic principle of motor rotation

When current flows through a wire, a rotating magnetic field (magnetic force) is generated around it, causing the magnet to rotate. This is actually the same operating state.

Current flows through the wire, creating a magnetic field

In addition, when the wire is wound into a coil, the magnetic force is synthesized to form a large magnetic field flux (magnetic flux), generating an N pole and an S pole.

In addition, by inserting an iron core into the coiled conductor, magnetic lines of force can pass more easily, generating a stronger magnetic force.

Inserting the iron core increases the field strength and generates a stronger magnetic force


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