Parallel plane capacitor.

  • Thread starter Evelima
  • Start date
  • #1
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1. Homework Statement [/b]

You make a parallel plate capacitor by using two sheets of aluminum foil, each the size of a
piece of notebook paper. The foil pieces are insulated from each other by a real piece of
notebook paper. The capacitance of this arrangment is approximately


a) 10ˆ–12

b) 10ˆ–8

c) 10ˆ–5

d) 10ˆ–2


2. Homework Equations [/b]

C = e0 (A / d)

3. The Attempt at a Solution [/b]

C = e0 (w x l)/d
I don't think this is what the question is asking though...
Im lost!
 

Answers and Replies

  • #2
gneill
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It looks as though they want you to estimate the capacitance. So you'll need to find out the dimensions of a piece of notebook paper, whatever "notebook size" is for your part of the world.
 
  • #3
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Looks like you were exactly correct to me. You just need some estimated numbers. e0 is proportional to 10^-12 then you could just guess at the ratio of the area to the distance.I guessed wrong but I looked it up for notebook paper 8.5x11" and thickness is 0.15 mm.

Kind of an annoying problem though...
 

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