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Homework Help: Using Ampere's Law in finding H (magnetic field intensity)

  1. Oct 20, 2012 #1
    1. The problem statement, all variables and given/known data

    Let the regions 0 < z < 0.3 m and 0.7 < z < 1.0 m be conducting slabs carrying uniform current densities of 10 A/m^2 in opposite directions. Find H (the magnetic field intensity) and different z positions.

    2. Relevant equations

    Biot-Sarvot Law: H = ∫ (I dL X r)/ (4∏R2)

    Ampere's Circuital Law: ∫ HdL = I

    3. The attempt at a solution

    I am guessing we have to apply ampere's law to each slab, in a rectangular loop. The slabs extend infinetly in the y and x axes. But I got no clue on exactly how to apply this law :( Any help would be appreciated as this my first post here.


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    Last edited by a moderator: Oct 20, 2012
  2. jcsd
  3. Oct 20, 2012 #2


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    Good idea. Surely your textbook has examples of how to apply Ampere's law.
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