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Homework Help: Current ratio expressed in nepers

  1. Dec 13, 2013 #1
    [itex]^{}[/itex]1. The problem statement, all variables and given/known data
    The current input of a system is 250mA. If the current ratio of the system is 15dB , determine (i) the current output and (ii) the current ratio expressed in nepers

    2. Relevant equations


    3. The attempt at a solution

    current ratio [itex]\alpha[/itex]=15dB, Iin=250mA=0.25A

    I[itex]_{out}[/itex]=I[itex]_{in}[/itex]x10[itex]^\frac{\alpha [dB]}{20}[/itex]==0.25x100.75


    1 Np ≡ 20 / ln(10) = 8.685889638 dB

    1. The problem statement, all variables and given/known data
    Last edited by a moderator: Dec 13, 2013
  2. jcsd
  3. Dec 13, 2013 #2


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    Staff: Mentor

    Was there a question associate with this? Your calculation of the output current and Neper value look fine.
  4. Dec 14, 2013 #3
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