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Homework Help: Tell if the impedance is complex inductive

  1. Apr 11, 2006 #1

    One of my HW problems asks the following after you solve it.

    Tell if the impedance is complex inductive, capactive, or real resistive.

    I said if my answer is of the form, R + 0j it is Real Resistive,

    if it is R + N j it is complex Inductive

    if it is R - Nj it is complex capacitive.

    I said the minus sign on the complex makes it capactive. Is this correct?
  2. jcsd
  3. Apr 12, 2006 #2

    Andrew Mason

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    Science Advisor
    Homework Helper

    I think it is just a convention. The convention is to express the reactance as positive if voltage leads current (inductive) and negative if voltage lags current (capacitive). So you are right.

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