Can Inductive reactance be Calculated?

Discussion in 'Homework Help' started by JDR04, Aug 20, 2012.

  1. JDR04

    Thread Starter Active Member

    May 5, 2011
    339
    4
    The question I am posed is "What is the inductive impedance of a circuit that has a 300mH inductor and a 2.7Mohm resistor connected in series". I'm given no voltages or frequencies either. Could somebody show me how to calculate this out please. Thanks a lot JDR04
     
  2. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,040
    287
    Without frequency, it CANNOT be calculated.
     
    JDR04 likes this.
  3. ugge77

    New Member

    Aug 19, 2012
    1
    1
    The only possible answer to this question is a function of frequency (f) or angular frequency, not a discrete value.
     
    JDR04 likes this.
  4. JDR04

    Thread Starter Active Member

    May 5, 2011
    339
    4
    Sorry guys, gave you the wrong information. Its INDUCTIVE IMPEDANCE that is required and not inductave reactance as I originally posted.
     
  5. Papabravo

    Expert

    Feb 24, 2006
    10,175
    1,798
    Sorry. Same problem. You get to impedance, a complex quantity, by adding the real part (resistance) to the imaginary part (reactance), and it is still a function of frequency. You need to take a step back and review your basic definitions and understanding.
     
  6. #12

    Expert

    Nov 30, 2010
    16,346
    6,833
    Xl=2PiFL
    (That's the simple form.)
     
    JDR04 likes this.
  7. JDR04

    Thread Starter Active Member

    May 5, 2011
    339
    4
    Thanks papabravo, my tutor has since told me that a mistake in the question was made by not including the frequency for the calculation. Now I'll look at it again and see if I can figure it out. Thanks for your help anyway -JDR04
     
Loading...