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What rules governs the mutual induction

  1. Nov 10, 2015 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations

    With what equations i can express the fact that when dc is aplied to transformer there is mutual inductance only when the voltage is turned on or off and there is no positive feed back represented as an infinite inducyion between the 2 coils?
    3. The attempt at a solution
     
  2. jcsd
  3. Nov 10, 2015 #2

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