DC current through capacitor and inductor...

Replies

• 

  Jeffrey Arulraj

  DC is blocked by capacitor and Inductor is short circuited in DC
  
  PS: Pls refer some books given in reference books thread in Electronics and Electrical section
• 

  satty lavanya

  Conqueror

  DC is blocked by capacitor and Inductor is short circuited in DC
  
  PS: Pls refer some books given in reference books thread in Electronics and Electrical section

  can u say.me in detail........
• 

  Jeffrey Arulraj

  You must know that impedance of a capacitor is inversely proportional to the frequency of the message signal
  
  Xc=1/jwC
  
  and when f=0 Xc=infinity
  
  Also in inductor Xl= jwL
  
  and when f=0 Xl= 0
  
  You know that if impedance is infinity the resistance is very high and if impedance is 0 we have a short circuit
• 

  satty lavanya

  Conqueror

  You must know that impedance of a capacitor is inversely proportional to the frequency of the message signal
  
  Xc=1/jwC
  
  and when f=0 Xc=infinity
  
  Also in inductor Xl= jwL
  
  and when f=0 Xl= 0
  
  You know that if impedance is infinity the resistance is very high and if impedance is 0 we have a short circuit

  my doubt was.....see in the case of dc current f=0.as f=1/t i.e as f=0 t=infinity .so now consider by these equations....i=c.dv/dt and v=-Ldi/dt now explain those statements please...
• 

  Jeffrey Arulraj

  That is really a great assumption here Friend
  
  But don't you think resistance plays a role when current flows through a conductor
  
  All I explained was using impedance of capacitor and inductor not the voltage and current rating
  
  
  PS: Pls note that for a small change in time is never assumed to be infinity in any of the equations u quoted here
  
  dt = a small period of time not the total time in which the inductor or capacitor is charged or excited