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Electromagnets are used in:

Electromagnets are used in: Correct Answer Both 1 and 2

CONCEPT:

Electromagnet:

  • An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.
  • Electromagnets usually consist of wire wounds into a coil.
  • The magnetism of the electromagnets can be increased by placing a soft iron rod inside the solenoid.
  • The core of electromagnets is made of ferromagnetic materials which have high permeability and low retentivity.
  • Electromagnets are used in electric bells, loudspeakers, and telephone diaphragms.
  • Giant electromagnets are used in cranes to lift machinery, and bulk quantities of iron and steel.


EXPLANATION:

  • Electromagnets are used in electric bells, loudspeakers, and telephone diaphragms. Hence, option 3 is correct.

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