Finding The Dielectric Constant?

1. Oct 18, 2005

sanitykey

Hi, i'm currently an A2 student and was wondering is it possible to find dielectric values for different materials placed within parallel plate systems. I have an idea but i think doing this is more complicated than i expect. I found the equation:

k=Cd/epsilonzero*A

d = distance between the plates
A = surface area of one of the plates
epsilonzero = 8.854*10^-12 C^2/N*m^2
C = capacitance after the dielectric is placed between the parallel plate system

The only problem is i can't think of another way to calculate the new capacitance.

<EDIT> Changed the main text body of my thread because i noticed some of the things i wrote didn't make sense.

Last edited: Oct 18, 2005
2. Oct 18, 2005

sanitykey

*cough*

ok i found a much simpler way to find the dielectric constant for parallel plate systems...

K = Eoriginal/Edielectric
K = Cdielectric/Coriginal

Where E=V/d

Would "d" be a constant if i didn't move the parallel plates further apart or closer together even after inserting the dielectric constant?

3. Oct 18, 2005

Claude Bile

Yes it would. Only k would change upon insertion of the dielectric.

Claude.

4. Oct 19, 2005

sanitykey

Thanks Claude that makes things clearer.

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