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Back E.M.F

  1. Jan 5, 2016 #1
    Hello all, I have got a hard time thinking of what back E.M.F is. Does it appear only at the moment of switching and closing the circuit ? why it's even there and what is its relation with E.M.F .
    If some one can provide me with a brief and good source that elegantly explains the whole thing I will be grateful.
  2. jcsd
  3. Jan 5, 2016 #2


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    Staff: Mentor

    As I said in your other thread, try starting with wikipedia.
  4. Jan 5, 2016 #3


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  5. Jan 5, 2016 #4

    David Lewis

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    When current increases in a conductor, a voltage (proportional to the rate of current change) is self-induced that opposes the current.
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