What is the energy stored in the capacitor for dc operation?

Discussion in 'Homework Help' started by hsilver, Sep 6, 2016.

  1. hsilver

    Thread Starter New Member

    Sep 6, 2016
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  2. AlbertHall

    Well-Known Member

    Jun 4, 2014
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    Have you calculated any voltages in that circuit?
     
  3. MrAl

    Well-Known Member

    Jun 17, 2014
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    Hi there,

    Yeah good idea. Calculate the voltage across the cap and then you can calculate the energy from just that.
     
  4. crutschow

    Expert

    Mar 14, 2008
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    3,220
    Do you know the equation for the energy stored on a capacitor versus its voltage?
     
  5. hsilver

    Thread Starter New Member

    Sep 6, 2016
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    I found the thevenin equivalent circuit across the capacitor (I am assuming that I did it right), but I dont know how to calculate the energy stored. My Vth = 8.57V and Rth = 2.14 ohms
     
  6. crutschow

    Expert

    Mar 14, 2008
    12,974
    3,220
    Here's some info on that.
     
  7. dannyf

    Well-Known Member

    Sep 13, 2015
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    all you need is to get the voltage over the 6R resistor.

    To do that, do a conversion of 8v+2ohm into a 4amp//2ohm current source. Everything is elementary after that.
     
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