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I Where does the formula I = -e/T comes from?

  1. Jul 6, 2017 #1
    Yeah, where does it comes from?
     
  2. jcsd
  3. Jul 6, 2017 #2

    Orodruin

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    You will have to be more specific and provide context.
     
  4. Jul 8, 2017 #3
    I'm going to assume your talking about electric current?

    In that case, electric current is defined to be the rate of charge passing a particular point.

    Charge is given the symbol Q, time t. So if the rate is constant, the current I = Q/t.

    In terms of your equation, -e is the charge of one electron, so your current would represent the rate at which a single electron (or something with that amount of charge) passes a particular point.
     
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