RL circuit with both Vs and Is out of phase.

Discussion in 'Homework Help' started by Tera-Scale, Jan 1, 2011.

  1. Tera-Scale

    Thread Starter Active Member

    Jan 1, 2011
    164
    5
    Hi,
    I ve been trying to workout an RL problem where Vs of 100\angle30 and Is of 2\angle-10 is applied to 2 impedances; Z1 = 25Ω and Z2 = R2+jXL. Can i convert the Vs to 100\angle40 and Is to 2\angle0 and work with them like that to find R2 and L ?
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    Yes - If it helps you solve the problem then shifting the source voltage phase angle and source current phase angle by the same value would be acceptable.
     
  3. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,395
    497
    Another technique is to convert polar coordinates into rectangular. This way:
    Vs=86.6+50j
    Is=1.969-0.347j
    Z1=25+0j=25
    Z2=R2+jXL
     
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