Definition, Meaning & Synonyms

impedance

Noun
/ɪmˈpiː.dəns/
Definition
Impedance is a measure of the opposition that a circuit presents to the flow of alternating current (AC).
Examples
  • The impedance of the circuit can change depending on the frequency of the AC signal.
  • Low impedance in a speaker allows it to draw more power from an amplifier.
  • Using a multimeter, we can measure the impedance of various components in the circuit.
Meaning
In simpler terms, impedance can be thought of as the resistance that AC encounters in a circuit, including both resistive and reactive components.
Synonyms
  • Resistance
  • Opposition
  • Impediment