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what electronic magnet works???​

Sagot :

Answer:

what electronic magnet works???

All electromagnets work on the principle that an electric current in a wire produces a magnetic field. ... Simply coil a length of wire round a piece of iron, such as a long iron nail, and pass an electric current through the wire. When the current flows a magnetic field is created and the iron becomes magnetised. Electromagnets are made of coils of wire with electricity passing through them. Moving charges create magnetic fields, so when the coils of wire in an electromagnet have an electric current passing through them, the coils behave like a magnet.

Electromagnets are very widely used in electric and electromechanical devices, including:

  • Motors and generators.
  • Transformers.
  • Relays.
  • Electric bells and buzzers.
  • Loudspeakers and headphones.
  • Actuators such as valves.
  • Magnetic recording and data storage equipment: tape recorders, VCRs, hard disks.
  • MRI machines.

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