Question

Two concentric spherical shells of diameter 13.6 cm and 26.0 cm are used to form a spherical capacitor. The charges on the inner and outer shells are −5.00 µC and +5.00 µC, respectively. (a) Determine the potential difference from the inner to the outer shell. Use the fact that the magnitude of the electric field at a distance r from the center of the inner shell is given by E = kQ/ r2 , where k is Coulomb's constant and Q is the charge on the shell. Incorrect: Your answer is incorrect. How is the potential difference defined in terms of the electric field when the field varies with distance? Did you consider the direction of the electric field in the space between the two shells? kV (b) If the space between the two shells is filled with air, determine the capacitance.

Answer 1