English, 02.02.2020 00:44, joceeeeelyn2899

Which statement about an electromagnet is true?
1) it doesn’t function without a source of current.
2) the core is made from a nonmagnetic material.
3) it uses moving magnets to create an electric field.
4) it creates a permanent and strong magnetic field.

Answers: 2

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Which statement about an electromagnet is true?
1) it doesn’t function without a source of cu...