I am thoroughly confused.
2007-07-11 11:56:46 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Resistance is a scalar quantity.
Impedance is a 2-dimensional vector which has resistance as the magnitude and phase as the other dimension of the vector.
Devices like capacitors and inductors can change the phase of voltages and currents relative to the source driving the voltage or current, so they have impedance, rather than simple resistance.
It's kind of like "speed" and "velocity". Speed is the scalar magnitude component of a velocity vector, but you also need to know which way you are speeding off to.
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2007-07-11 12:19:10 · answer #1 · answered by tlbs101 7 · 4⤊ 0⤋
Resistance is a concept used for DC (direct currents) whereas impedance is the AC (alternating current) equivalent.
Hope this helped.
2007-07-11 12:07:37 · answer #2 · answered by lenstaa21 2 · 2⤊ 0⤋
Resistance come from resister
Impedance is the result of placing the combination of capasters and inductancs and resisters.
2007-07-11 13:09:27 · answer #3 · answered by JAMES 4 · 0⤊ 1⤋