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Homework Help: Rms magnetic field strength

  1. Apr 16, 2012 #1
    1. The problem statement, all variables and given/known data
    the power density of sunlight, at the earth, is roughly 1 kilowatt/meter^2. How large is the rms magnetic field strength?

    2. Relevant equations

    3. The attempt at a solution
    I tried using the equation for power density S = E(rms)^2=√(εμ), then substituting B(rms)/c for E(rms), and subsequently solving for B(rms). However this does not give me the correct solution and I am now confused
  2. jcsd
  3. Apr 16, 2012 #2


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    Science Advisor
    Homework Helper

    hi clayton261! :smile:

    (try using the X2 and X2 buttons just above the Reply box :wink:)

    show us your full calculations, and then we'll see what went wrong, and we'll know how to help! :smile:
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