Impedance

Impedance is the complex-valued generalization of resistance. It may refer to:

  • Acoustic impedance, a constant related to the propagation of sound waves in an acoustic medium
  • Electrical impedance, the ratio of the voltage phasor to the electric current phasor, a measure of the opposition to time-varying electric current in an electric circuit
    • High impedance, when only a small amount of current is allowed through
    • Characteristic impedance of a transmission line
    • Impedance (accelerator physics), a characterization of the self interaction of a charged particle beam
    • Nominal impedance, approximate designed impedance
    • Impedance matching, the adjustment of input impedance and output impedance
  • Mechanical impedance, a measure of opposition to motion of a structure subjected to a force
  • Wave impedance, a constant related to electromagnetic wave propagation in a medium

See also

  • All pages with titles beginning with impedance
  • All pages with titles containing impedance
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