Five study segments of the Self-Paced Physics Course materials are presented in this fourth problems and solutions book used as a part of student course work. The subject matter is related to electric charges, insulators, Coulomb's law, electric fields, lines of force, solid angles, conductors, motion of charged particles, dipoles, electric flux, surface charge densities, charging processes, and Gauss's law. Contained in each segment are information panels, core problems enclosed in a box, core-primed questions, scrambled problem solutions, and true-false questions. Accompanying study guides are used to answer the true-false questions and to reveal directions for reaching solutions. When the core problem is answered incorrectly, the study guides require students to follow the remedial or enabling loop, leading to the solutions of core-primed questions. Also included is a sheet of problem numbers with corresponding page numbers which locate correct answers. (Related documents are SE 016 065 - SE 016 088 and ED 062 123 - ED 062 125.) (CC)