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anonymous

  • one year ago

An electromagnet can be made by wrapping wire around which object? A. Plastic pipe B. Plastic knife C. Wooden sticks D. Metal rod I think its D..?

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  1. anonymous
    • one year ago
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    a core of ferromagnetic metal will increase the magnetic field, and then make the lectromagnet useful, if you use, for example, plastic or wood, you will still get a magnetic field, but too weak. so i think D is the best answer here

  2. anonymous
    • one year ago
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    Ah ok, that makes a little sense XD thanks!

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