A cylindrical capacitor has an inner conductor with a radius of 1.6mm and an outer conductor with a radius of 3.8mm. The two conductors are separated by vacuum, and the entire capacitor has a length of 2.4m.
What is the capacitance per unit length?
The potential of the inner conductor relative to that of the outer conductor is 360mV . Find the charge (magnitude and sign) on both conductors.