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what is magnetism?what are the applications of magnetism?

what is magnetism?what are the applications of magnetism?

Grade:12

2 Answers

Arun
25750 Points
6 years ago
Magnetism is a class of physical phenomena that are mediated by magnetic fields. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, producing magnetic fields themselves. Only a few substances are ferromagnetic; the most common ones are iron, nickel and cobalt and their alloys. The prefix ferro- refers to iron, because permanent magnetism was first observed in lodestone, a form of natural iron ore called magnetite, Fe3O4.
Arun
25750 Points
6 years ago
Real life applications of magnetism
 

  • Magnets in Compasses

  • Magnets for Detection: Burglar Alarms, Magnetometers, and MRI
  • Magnets for Projecting Sound: Microphones, Loudspeakers, Car Horns, and Electric Bells

  • Recording and Reading Data Using Magnets: From Records and Tapes to Disk Drives

  • MAGLEV Trains

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