The gure provided shows a section ofa very long rod of radius a : 2.29 mm and linear charge density 3.78 nC/m. The rod is inside a coaxial cylindrical shell of radius b = 9.60 mm and linear charge density -7.89 nC/m. What is the magnitude and direction of the electric field at a radial distance of 5.08 mm? Magnitude: l:l Direction: 0 Inward O Outward What is the magnitude and direction of the electric field at a radial distance of 16.4 mm? Direction: 0 Inward O Outward