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4 November, 23:40

Which statement about an electromagnet is true? A. It doesn't function without a source of current. B. The core is made from a nonmagnetic material. C. It uses moving magnets to create an electric field. D. It creates a permanent and strong magnetic field.

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  1. 5 November, 01:45
    0
    The answer is A

    just did test
  2. 5 November, 03:00
    0
    An electromagnet is only magnetic when there's electric current flowing through its coils (A). When there's no current flowing through it, it just lays there like a lump of iron with wire wound around it.
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