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Calculate the solenoid dimension

  1. Apr 30, 2008 #1
    Hi to all,

    I have a problem to share with you guys.

    How can I calculate the thickness of my solenoid if I have these values;

    Solenoid long : 20cm
    magnetic field, B : 5Tesla
    Current, I : 20A

    Thanks a lot for your help. I appreciate that
  2. jcsd
  3. Apr 30, 2008 #2


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  4. Apr 30, 2008 #3
    5T, yeah I know , it's a lot. is it possible?
  5. Apr 30, 2008 #4
    B=╬╝nI this is only valid if the proportion between the thickness and the longeur is huge.
  6. Apr 30, 2008 #5


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    Since stronger magnets have been built, it's possible.
    Within any construction constraints you might have, no idea.
    Good luck with that.
  7. May 6, 2008 #6
    At which place is regarding to solenoid [tex]B=5\;T[/tex]?

    For example,formula for [tex]B[/tex] in center of solenoid is:

  8. May 6, 2008 #7
    It's in the air at the center of the solenoid.

    I found a formula


    So now I confuse, it's 4R^2 or R^2?
  9. May 7, 2008 #8
    You are right,it is error in my book.But still you don`t have [tex]N[/tex] given.:confused:
  10. May 7, 2008 #9
    the thickness of the solenoid depends on the value of N. So, I dont know if we have to calculate N first or, directly calculate the value of the thickness
  11. May 7, 2008 #10

    [tex]N[/tex] is number of loops.
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