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Frequency of an electromagnet

  1. Aug 4, 2009 #1
    I am looking for a relation between electromagnet (or permanent magnet) and frequency.For example what is the frequency of an electromagnet that has 45000 gauss electromagnetic field?
  2. jcsd
  3. Aug 5, 2009 #2

    Vanadium 50

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    There is no such relation.
  4. Aug 5, 2009 #3


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    You use a DC current to power an electromagnet. I am not aware of an electromagnet that uses AC currents without converting them first to DC.
  5. Aug 6, 2009 #4
    It is 45000 gauss magnetic field

    B=μnI/2πr {n=no.of loops, r=radius of a loop}

    To the right are the values of μ
    Ferrite U 60 => 1.00E-05
    Ferrite M33 => 9.42E-04
    Nickel (99% pure)=> 7.54E-04
    Ferrite N41 => 3.77E-03
    Iron (99.8% pure)=> 6.28E-03
    Ferrite T38 => 1.26E-02
    Silicon GO steel => 5.03E-02
    supermalloy => 1.26

    The frequency of current and magnetic field is equal to the frequency of source
    Last edited: Aug 6, 2009
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