Question

1) Is the dielectric constant (used in calculations for capacitances) effected by the volume of the material?

2) Comparing long vs. short dielectrics with the same area (equal to the conductive plate's area) would the dielectric constant be higher from the longer one?

3) Is the capacitance effected (increased/decreased or the same) if the dielectric material is extended in length (L = d separation between the parallel plates)?

Answer 1

1.

Dielectric constant is a constant and depends upon the material not it's size, So it will change material to material only

2. As I told it is a constant and change material to material only, it will not change due to shape and size

3. The capacitance of a parallel plate capacitor is given by

[d is much much smaller to L, So we can neglect the end effect]

So the capacitance will not chance due to increase the length, It will only change by area of the plates, separation of the plates and dielectric constant of the material used