2 A positive charge produces an electric field around it. Draw the electric field at points P, Q, and R. The length of the field vectors should roughly correspond to the relative strength of the field at each of the field points. 00 R .P 3 A non-uniform electric field E is represented by field lines. Draw on the figure 4 equipotential lines for the field. The distance between the lines should correspond to equal potential differences. Which line is at the lowest potential?