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A statement about electromagnets that is true might include "electromagnetic fields always form a closed loop."

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11y ago

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Electromagnets are temporary magnets that are created when electric current flows through a wire coil. The strength of an electromagnet can be increased by increasing the number of turns in the wire coil, increasing the current flowing through the coil, or by using a ferromagnetic core material.

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1y ago
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Q: Which of the following statement about electromagnets is true?
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