The space between two concentric conducting spherical shells of radii b = 2.30 cm and a = 1.20 cm is lled with a substance of dielectric constant K = 15.5. A potential difference V = 64.0 V is applied across the inner and outer shells. Determine (a) the capacitance of the device, (b) the free charge q on the inner shell, and (c) the charge q induced along the surface of the inner shell. 4} (a) Number I Units 1' (b) Number a Units 4} (c) Number Units The figure shows a parallel-plate capacitor of plate area A = 11.4 cm and plate separation 2d= 6.63 mm. The left half of the gap is filled with material of dielectric constant k1 = 25.6; the top of the right half is filled with material of dielectric constant K2 = 42.8; the bottom of the right half is filled with material of dielectric constant K3 = 57.0. What is the capacitance? A/2 A/2 T d 2d K] Number UnitsAn air-lled parallel-plate capacitor has a capacitance of 1.5 pF. The separation of the plates is doubled and wax is inserted between them. The new capacitance is 2.4 pF. Find the dielectric constant of the wax. Number I Units 1b