2. Another dielectrics-filled spherical capacitor Given a spherical capacitor with dielectrics in between for two different cases below, find the net capacitance of the spherical capacitor for both cases. For case A, the spherical capacitor has a conducting sphere at the center and a thin conducting shell. It is filled with dielectrics in between the sphere and the shell only halfway radially. For case B, we have a conducting sphere and a thin conducting shell, with dielectrics filling half of the sphere. b Case A 0 0 R b Case B