Activity 1 - Mapping the Electric Fields and Equipotential Lines of a Dipole In this activity, a potential difference is established between two electrodes on a sheet of conducting paper which has a uniform electrical resistance (see Figure 2). A configuration has been painted on the conducting paper with conducting silver paint to serve as positive and negative sources. The system shown produces, in the plane of the conducting paper, an electric field (along which charges flow) and equipotential lines that are somewhat similar to those of a set of static charged point sources. Reference Micrometer