Get Affordable VMs - excellent virtual server hosting


browse words by letter
a b c d e f g h i j k l m n o p q r s t u v w x y z
impedance

more about impedance

impedance


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Impedance  \Im*ped"ance\,  n.  [Impede  +  -ance.]  (Elec.) 
  The  apparent  resistance  in  an  electric  circuit  to  the  flow  of 
  an  alternating  current,  analogous  to  the  actual  electrical 
  resistance  to  a  direct  current,  being  the  ratio  of 
  electromotive  force  to  the  current.  It  is  equal  to  root{R^{2} 
  +  X^{2}},  where  R  =  ohmic  resistance,  X  =  reactance.  For  an 
  inductive  circuit,  X  =  2[pi]fL,  where  f  =  frequency  and  L  = 
  self-inductance;  for  a  circuit  with  capacity  X  =  1  [div] 
  2[pi]fC,  where  C  =  capacity. 
 
  From  WordNet  r  1.6  [wn]: 
 
  impedance 
  n  :  a  material's  opposition  to  the  flow  of  electric  current; 
  measured  in  ohms  [syn:  {electric  resistance},  {electrical 
  resistance},  {resistance},  {resistivity},  {ohmic 
  resistance}] 




more about impedance