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Single phase R L C circuits

  1. Aug 17, 2009 #1
    Hey,

    Im stuck.

    A coil has a resistance of 40ohms, and an inductive reactance of 75 ohms. The current in the coil is 1.70 to 0degrees amps. (think its in cartesian)

    a. draw a well labelled diagram
    b. calculate the supply voltage in polar form
    c. calculate the p.d across the 40 ohm resistance in polar form
    d. calculate the p.d across the inductive part of the coli in polar form.

    Apart from drawing the diagram I'm stuck. I'm not really sure how to work out polar and cartesian (it's been a long time and I was never great in the first place)

    Can anybody help me as I really don't know where to begin.

    Thanks
     
  2. jcsd
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