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Homework Help: Getting E-Field from magnetic field intensity, H

  1. Jun 3, 2008 #1
    1. The problem statement, all variables and given/known data
    Given the magnetic field intensity, H, find E.
    H=[tex]\hat{y}[/tex]6cos(2z)sin((2x10^7)t - 0.1x)

    2. Relevant equations
    [tex]\nabla[/tex] [tex]\times[/tex] E = [tex]\frac{- \partial B}{\partial t}[/tex]

    3. The attempt at a solution
    Since we have H, we can use the relationship that [tex]\mu[/tex]H = B and then take the partial derivative of that with respect to time. That would give us this quantity...

    [tex]\frac{- \partial B}{\partial t}[/tex]

    Now, how do I get to E-field from that? How do you "uncurl" that?
  2. jcsd
  3. Jun 4, 2008 #2
    You could use Stokes's theorem to "uncurl" E. Do you see where it's headed?

    Also, just to help you out in the future, anything with Calc 3 doesn't really belong in intro physics, and you may be helped quicker in advanced physics for questions like this.
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