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Re[2]: Household NEUTRAL is not really a return path

Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>

At 11:15 AM 9/16/2005, you wrote: 
Original poster: Illicium Verum <sebas@xxxxxxxxxxxxxxxx>


Hello Daniel,

As far as I know resistance and impedance are the same.
Not exactly.
Resistance is the real part of impedance. Reactance is the imaginary part.
You could have a "ground connection" that has zero ohms resistance, yet have a 1000 ohm impedance (i.e. an inductor of some sort), and that's why the distinction is important.

They are both expressed in Ohm. It's just that impedance is usually used to describe dampening of current in AC circuits where as resistance describes the current dampening in DC circuits.