9. What is the magnitude of the electric field a distance r from an infinite line of uniform charge density, X? X Eda a la E 21th = ht 10. A point charge. +. is placed at the center of a small sphere, A. The sphere is in the center of a larger cube, B, and the cube is in the center of a larger sphere, C.See the figure below, the charge is represented by the small dot in the middle. Which surface has the largest electric flux through it? th b. B c. All three surfaces have the same flux through them. e. The answer depends on the unknown dimensions of each surface.