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Properties of an electromagnet

  1. Mar 28, 2013 #1
    We are going over magnetism in my Physics 2 course but we barely covered electromagnets. I was wondering what the math equation for field strength would be for an electromagnet. In other words, how is current related to field strength when you wrap a wire around a piece of metal. Also I was wondering because i wanted to experiment with a high powered magnet. Like a car battery. Too dangerous?
  2. jcsd
  3. Mar 29, 2013 #2


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    Staff: Mentor

    You can find many relevant formulas at Wikipedia or in all textbooks about electromagnetism.

    I would be worried about the car battery. The magnetic field itself, if it is far away from anything reacting to magnetic fields, should be fine.
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