anonymous
  • anonymous
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..?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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
anonymous
  • anonymous
Ah ok, that makes a little sense XD thanks!

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