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B Flux density of a magnet

  1. Aug 8, 2017 #1
    Flux density of a magnet is about how many T?

    In an experiment, I obtained the number 227.6 T.

    Is this a sensible value for a small (5cm long) bar magnet? Thank you~
  2. jcsd
  3. Aug 8, 2017 #2


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  4. Aug 8, 2017 #3
    Tesla and Farad are the two units where if you have 1 of it, you have a LOT.
  5. Aug 9, 2017 #4


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    how did you get that figure
    show some working so that some one may be able to help you understand where you went wrong

    so you should have gleaned from @CWatters link that strength of one of those smaller rare earth magnets is around 1.25T

    Therefore if your magnet is a typical older style iron bar magnet, it may be around 0.25 to 0.5 T at the most

  6. Aug 10, 2017 #5
    Yes, thank you everyone. I found that I did something wrong in my calculations. Now I have a value around 0.22 T.
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