Impedance Question

Discussion in 'Homework Help' started by Aviku, Nov 20, 2007.

  1. Aviku

    Thread Starter Member

    Nov 20, 2007
    11
    0
    Can any one show me how to calculate the circuit reactance of impedance (Z) of a reactive circuit is known to be 500 ohms and it has resistance is 400 ohms.
     
  2. recca02

    Senior Member

    Apr 2, 2007
    1,211
    0
    impedance^2= resistance^2 + reactance^2

    or:
    Impedance = z; reisitance =r; reactance =x
    then cos(phi)= r/z
    z.sin(phi)=x
     
  3. Aviku

    Thread Starter Member

    Nov 20, 2007
    11
    0
    Thanks, but can you more elaborate on this. Didn't get it quite, sorry for that
     
  4. recca02

    Senior Member

    Apr 2, 2007
    1,211
    0
    impedance=z is known,
    resitance=r is known.

    reactance (X) is given by : square of X = square of (z) - square of (r)
    take sq root of (square of (z) - square of (r)) and you have value of x.
     
  5. Aviku

    Thread Starter Member

    Nov 20, 2007
    11
    0
    Well done, thanks
     
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