(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A parallel plate capacitor with A=125 cm^{2}and d=1.25 mm is charged to a potential difference of 10.0 V. What is the charge density on each plate?

2. Relevant equations

[tex]

V = \frac{{\sigma d}}{{\varepsilon _0 }}\,\,\,\, \Rightarrow \,\,\,\,V\varepsilon _0 = \sigma d\,\,\,\, \Rightarrow \,\,\,\,\sigma = \frac{{V\varepsilon _0 }}{d}

[/tex]

3. The attempt at a solution

Plugging in numbers, I get 8.5*10^{-8}C/m^{2}. But I never used the Area. My units seem to work. Did they throw in irrelavant data? Shouldn't I only need Area if I want total charge?

Should my answer be half of what I computed, because it is divided between 2 plates?

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Parallel plate capacitor and charge density

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