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Charged capacitor

  1. Jan 30, 2014 #1
    1. The problem statement, all variables and given/known data
    A voltage of 14 V is placed on a capacitor with C = 113 pF (picofarads).

    (a) What is the charge on the capacitor?

    (b) How much energy is stored in the capacitor?

    I believe I have the correct equation but I'm not sure about the final answer because of the picofarads. Are my answers correct?

    2. Relevant equations

    (a)Q=C*U
    (b)E,stored=1/2*C*U^2

    3. The attempt at a solution
    (a)113*14=1.582e-6
    (b)113*14^2*(1/2)=11.074e-6
     
  2. jcsd
  3. Jan 30, 2014 #2

    collinsmark

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    Homework Helper
    Gold Member

    Your units are off by a few orders of magnitude.

    1 picofarad = 1 × 10-12 Farads
     
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