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Help with curls and current density 1

  1. Apr 13, 2009 #1
    Help with curls and current density!!1

    1. The problem statement, all variables and given/known data
    In cylindrical coordinates, J = 105*(cos(2r)2)*az in a certain region. Obtain H from this current density and then take the curl of H and compare with J.

    Answer H = 105*(r/4+sin4r/8+cos4r/32r-1/32r)aphi


    2. Relevant equations
    J = Del Operator X H


    3. The attempt at a solution
    Well I know I will be working backwards here. Im given the current density and they want H. However can anyone provide hints for me for the inverse of the del operator. Am I just going ot take the integral of everything as opposed to the partial derivative.??

    Thanks
     
  2. jcsd
  3. Apr 14, 2009 #2

    Hootenanny

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    Re: Help with curls and current density!!1

    Here the current density has only one component (az). Which component of the curl operator will yield this components of J?
     
  4. Apr 14, 2009 #3
    Re: Help with curls and current density!!1

    Telling from the answer it looks like aphi
     
  5. Apr 15, 2009 #4

    Hootenanny

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    Re: Help with curls and current density!!1

    I meant in terms of partial differentials.
     
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