A cylindrical capacitor has an outer conductor with a radius of 3.5 mm and an inner conductor with a radius of 2.1 mm. The two conductors are separated by vacuum and the entire capacitor has a length of 2.2m.
Part A
What is the capacitance per unit length?
Express your answer using two important figures.
Part B
The potential of the inner conductor relative to that of the outer conductor is 350mV. Discover the charge (magnitude and sign) on both conductors.