Урок 20. Магнитная индукция, магнитный поток, магнитная цепь

Magnetic induction characterizes the power capabilities of the magnetic field of an MP at its single point. Measured in tesla, T. Magnetic flux is the product of induction on the area within which induction acts. Magnetic flux is measured in buckets, WB. Magnetic permeability shows how much the MP changes in a particular environment. For example, the MP in steel is increased by 4000 times, compared with vacuum or air. Materials that greatly increase the field relate to ferromagnets. The magnetic circuit is characterized by the same laws as the electrical circuit, that is, the law Ohm and Kirchhoff's laws apply to it. Only current serves as a magnetic flux, and electromotive force EMF - magnetomotive force MDS. The material is characterized by magnetic resistance. These phenomena are widely used in the manufacture of electric motors, generators, transformers and other electrical devices, including various sensors.