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  • Chapter 12: Fundamentals of Electricity & Electronics › Types of Magnets

    Types of Magnets Magnets are either natural or artificial. Since naturally occurring magnets or lodestones have no practical use, all magnets considered in this chapter are artificial or manmade. Artificial magnets can be further classified as permanent magnets, which retain ... their magnetism long after the magnetizing force has been removed, and temporary magnets, which quickly lose most of their magnetism when the external magnetizing force is removed. Figure 12-17. Tracing out a magnetic field with iron filings. Figure…

  • Chapter 12: Fundamentals of Electricity & Electronics › Magnetism

    repel each other is indicated by the bulging of the flux in the air gap between the two magnets. To further demonstrate that lines of force do not cross one another, a bar magnet and a horseshoe magnet ... positioned to display a magnetic field similar to that of Figure 12-15. Magnetic field around magnets. Figure 12-16. Arrangement of molecules in a piece of magnetic material. Figure 12-20. The magnetic fields of the two magnets…