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Quick electromagnet coil question

  1. May 10, 2012 #1
    Hello everyone

    I have coiled an electromagnet over the weekend using iron and magnet wire, but when I connect it to my power source, the electromagnet becomes very hot. Is there some coating I can use to reduce the heat produced by the electromagnet when in use? Like epoxy or some sort of lacquer???

  2. jcsd
  3. May 10, 2012 #2


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    Science Advisor
    Gold Member
    2017 Award

    hi Stephen
    welcome to PF

    thats not going to stop the heat
    tell us more about your electro magnet
    how many turns of wire and what wire gauge ?
    what size/shape iron core?
    what voltage are you running it from?
    Have you measured the current being drawn by the coil?
    Have you measured the resistance of the coil?

    getting hot infers that you probably have too few turns and that there is a sizeable current being drawn, you probably need many more turns of wire

  4. Jul 11, 2012 #3
    An electromagnet coil is a ring that arrounded by magnet wire . it is often wound around an iron core. However, it may be wound around an air core, in which case it is called a solenoid. When connected to a DC voltage or current source, the electromagnet becomes energized, creating a magnetic field just like a permanent magnet.
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