capacitors help

Discussion in 'General Electronics Chat' started by Nwuyag, Sep 17, 2013.

  1. Nwuyag

    Thread Starter New Member

    Sep 12, 2013
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    0
    i guess that to calculate time constant in a capacitor, the formular is t=RC.
    so when you connect a capacitor to a source, without a resisor with it, doesnt it still charge?, then why cos t=(0)*C =0. i might be missing something, any help is appreciated
     
  2. ronv

    AAC Fanatic!

    Nov 12, 2008
    3,290
    1,255
    It's true but there is never R=0. There is always some resistance.
     
  3. Nwuyag

    Thread Starter New Member

    Sep 12, 2013
    14
    0
    i get it. does it mean it will then take a very long time to charge cos the resistance is very small?
     
  4. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    No. Low resistance means quick responses.

    Please be careful with cos(t) which means cosine of time
    and "cos the resistance" which means "because the resistance".
     
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