Which magnets need an electric current for
magnetism?
A. Bar magnets
B. Temporary magnets
C. Permanent magnets
D. Horseshoe magnets
Answers
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2
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 center of the coil
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Option c permanent magnets
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