Z = SQR (R² + XL²) Where: Z = Impedance (ohm) R = Resistance (ohm) XL= Inductance Reactance (ohm)
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The impedance of a capacitor is inversely proportional to its capacitance. In other words, the more charge it can store, the lower its impedance is. It is also inversely proportional
http://www.ehow.com/info_8634041_lowimpedancecap...

Euler's formula was proven for the first time by Roger
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Electrical impedance. is the. complex. ratio of the voltage to the current in an. alternating current. (AC) circuit. Impedance extends the concept of. resistance. to AC circuits,
http://www.quora.com/ElectricalEngineering/Whati...
