23. What is an electromagnet? What does it consist of ?
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An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.
Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole, denoting the centre of the coil.
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An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.
Electromagnetsusually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole, denoting the centre of the coil
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