1. Why are electromagnets also called temporary magnets?
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Iron has a high magnetic permeability, which enables it to reinforce the magnetic field generated by the wire. However, as soon as the power from the battery stops, the current stops, and this means that the magnetic field vanishes. This is the reason that electromagnets are temporary magnets.
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2
Answer:
Iron has a high magnetic permeability, which enables it to reinforce the magnetic field generated by the wire. However, as soon as the power from the battery stops, the current stops, and this means that the magnetic field vanishes. This is the reason that electromagnets are temporary magnets.
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