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Homework Help: Back emf calculations

  1. Feb 9, 2013 #1
    1. The problem statement, all variables and given/known data

    i have a 200v dc motor with 20A flowing through the armature with a resistance of 0.3Ω, how do i calculate the back emf??? very confussed :(

    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Feb 9, 2013 #2

    CWatters

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  4. Feb 11, 2013 #3
    Thanks for your help, not so confussed now :)
     
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