A cylindrical capacitor has ra = 3.5 mm and rb = 0.50 mm. The two conductors have a potential difference of 445 V, with the inner conductor at the higher potential. What is the capacitance of the capacitor?
a. 5.12 μF
b. 7.89 μF
c. 9.21 μF
d. 12.34 μF
