Finding permittivity of acetate in a parallel plate capacitor

[ChechoGomez]

Homework Statement

The question goes as follows: A simple capacitor consists of two square sheets of aluminium foil separated by a thin sheet of acetate. The foil is 31.6 cm on a side and the acetate is 0.5 cm thick, with a dielectric constant k= 3.4

What is the permittivity ε of the acetate sheet?

Homework Equations

q= CV C=kε(knot)A/d

 

[ehild]

How is the dielectric constant defined in terms of permittivity of the material and permittivity of vacuum?

ehild