A parallel-plate capacitor is constructed with circular plates of radius 5.6×10−2 m . The plates are separated by 0.27 mm , and the space between the plates is filled with a dielectric with dielectric constant κ. When the charge on the capacitor is 1.9 μC the potential difference between the plates is 780 V . Find the value of the dielectric constant, k.

Answer 1

Isn't this a standard formula?

C=k*episilon*Area/separation

C=Q/V set them equal, solve for k