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.

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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.

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.