Further analysis supports the conclusion that the dielectric has a significant effect on the capacitor characteristics. The experiment successfully demonstrated the relationship between permittivity and capacitance. In addition, the permeability of free space and the permeability of the plastic plate were effectively measured. These results confirm the theoretical model by highlighting the effect of the dielectric on the capacitance. Despite possible sources of error, the results were consistent and provided valuable information about the properties of the dielectric inside the capacitor.