Given a 4.0-nC charge on a 1.0 meter length of an inner cylindricalshell of radius a = 0.060 m, a -4.0-nC charge on a 1.0 meter lengthof an outer cylindrical shell of radius b = 0.077 m, & anεr = 9.0 dielectric in between the shells,
(a) determine the potential difference between the cylindrical shells, &
(b) determine the capacitance per meter length between the shells.