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Homework Help: Electrical: R-L Circuit issues

  1. Nov 28, 2013 #1
    1. The problem statement, all variables and given/known data

    Using circuit analysis calculate the inductance (L) within an electrical 50hz AC circuit containing a 12Ω resistor and inductive reactance of 5Ω which are in series.

    2. Relevant equations

    Inductive reactance:
    XL = 2∏FL

    Therefore inductance:
    L = XL\2∏F

    3. The attempt at a solution

    Using my calculator I achieve the following:

    L = (XL)\(2)(∏)(F)
    L = 5Ω \ (2∏) x (50)
    L = 5Ω \ 314.159
    L = 0.0159 H
    L = 15.9mH

    I believe this value is correct.
  2. jcsd
  3. Nov 28, 2013 #2


    User Avatar

    Staff: Mentor

    Hi Ryanyates1988. http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif [Broken]

    Your "\" is not a recognized engineering maths symbol. Regardless of what your calculator may use, you must express maths statements correctly in all other contexts, and include the necessary parentheses.

    Last edited by a moderator: May 6, 2017
  4. Nov 28, 2013 #3
    Hi Nascent,

    Thank you for your reply. I will look up the symbols and post on my next questions.

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