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Impedance n power factor relationship?

What is the relationship between impedance n power factor? 

Are they dependent on each other? Or both r independent

Then the cosine of the resulting angle between the current and voltage is the power factor. ... In a capacitive-resistive circuit the power factor will be “leading”. Then an AC circuit can be defined to have a unity, lagging, or leading power factor.

@abhijeet  I didn't get 

I know cosine is the power factor 

I want to know that is impedance dependent on power factor (cos(phi))

For a star or Delta connection single phase all impedances are same then the power factor of all three is same or not?

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