I'm going through my book and one of the Example exercises has the following problem:(adsbygoogle = window.adsbygoogle || []).push({});

Two plates, each of area 3X10^-4 m^2 are used to construc a parallel-plate capacitor with capacitance 1 pF. (a) Find the necessary seperation distance.

Seems pretty obvious right? C = Eo(A/d)

So, I figure I'm finding d = C/(Eo)(A)

but it doesn't come out right, so I must be missing something either in my math (not surprising) or the area. Do I need to do a calculation with the area? Like 2 X A? That doesn't work either, and it doesn't seem right to do it that way. Help, please?? :yuck:

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Parallel Plate Capacitor and distance

**Physics Forums | Science Articles, Homework Help, Discussion**