Electrical Impedance - Resistance Vs Reactance

Resistance Vs Reactance

Resistance and reactance together determine the magnitude and phase of the impedance through the following relations:

In many applications the relative phase of the voltage and current is not critical so only the magnitude of the impedance is significant.

Read more about this topic:  Electrical Impedance

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    How is freedom measured, in individuals as in nations? By the resistance which has to be overcome, by the effort it costs to stay aloft. One would have to seek the highest type of free man where the greatest resistance is constantly being overcome: five steps from tyranny, near the threshold of the danger of servitude.
    Friedrich Nietzsche (1844–1900)