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Protons And Magnetism

  1. Feb 11, 2004 #1
    A stream of protons passes a given point in space at a rate of 10 E9 protons/second. What mafnetic fiel do they produce 2.0 m from the beam?
    i think i would use
    I= 1.6 E-19x10 E 9
    and then
    B=(permativity of free space x I)/(2pir) using 2.0 as r? am i totally off or close?
     
  2. jcsd
  3. Feb 12, 2004 #2
    permittivity of free space = ε0 = 8.85 x 10-12 C2/Nm2

    permeability of free space = μ0 = 4Π x 10-7 Tm/A

    Are those close, or totally off?

    In this case, you want μ0 (permeability), not ε0.
     
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