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Homework Help: Plate Capacitors

  1. Feb 2, 2010 #1
    1. The problem statement, all variables and given/known data

    The plates of a capacitor have an area of 0.4m2 and are separated by a distance of 0.5 micrometers. The material between the two plates is air with a dielectric constant of 1.0 One plate of the capacitor is given the charge of 4[tex]\muC[/tex]. The voltage across the capacitor is, in volts:

    2. Relevant equations

    C=[tex]\epsilon[/tex](A/d) C=q/[tex]\Delta[/tex]V
    3. The attempt at a solution
    So far I've been trying to calculate the capacitance with the first equation and then use the second equation for finding the change in voltage. I keep coming up with the wrong answer, though. Help please!
  2. jcsd
  3. Feb 2, 2010 #2


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    Homework Helper

    Show your calculations.
  4. Feb 2, 2010 #3

  5. Feb 2, 2010 #4
    I just looked at my calculations and cnai just say sorry if they are a little garbled. I'm having trouble getting used to the way you do calculations on the website. Let me know if you would like me to do them again. Thanks!!
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