Solve the given problems:
Problem I: A parallel-plate capacitor has a capacitance of C0 = 3.60pF when there is air between the plates. The separation between the plates is 3.00mm.
Part A: What is the maximum magnitude of charge that can be placed on each plate if the electric field in the region between the plates is not to exceed 3.00×104V/m?
Problem II: A dielectric with a dielectric constant of 2.60 is inserted between the plates of the capacitor, completely filling the volume between the plates.
Part A: Now what is the maximum magnitude of charge on each plate if the electric field between the plates is not to exceed 3.00×104V/m?
Having trouble with this physics problems, can you please explain with the answer.