17th October 2019

hcmut
11

What is different between impedance and resistance?

Resistance is a concept used for DC (direct currents) whereas impedance is the AC (alternating current) equivalent. Resistance is due to electrons in a conductor colliding with the ionic lattice of the conductor meaning that electrical energy is converted into heat.

What is the unit of measurement for impedance?

Reactance is mathematically symbolized by the letter “X” and is measured in the unit of ohms (Ω). Impedance is a comprehensive expression of any and all forms of opposition to electron flow, including both resistance and reactance. It is present in all circuits, and in all components.
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