Macmillan: Quantit... All Boo Rev PROBLEM SOLVING STRATEGY 24.1 Gauss's law Learning Goal: MODEL: Model the charge distribution as a distribution with symmetry. To practice Problem-Solving Strategy 24.1 for Gauss's law problems. VISUALIZE: Draw a picture of the charge distribution. An infinite cylindrical rod has a uniform volume charge density p (where p > (). The cross section of the rod has radius ro. Find the magnitude of the electric field E at a Determine the symmetry of the electric field. distance r from the axis of the rod. Assume that T