This resource includes the following topics: capacitors & dielectrics, DC circuits; examples of circuits, current: flow of charge, direction of the current, current density j, why does current flow, microscopic picture, conductivity and resistivity, microscopic ohm?s law, prs questions: resistance, ohm?s law, symbols for circuit elements, sign conventions -battery; resistor; capacitor, series vs. parallel, resistors in series; parallel, prs questions: light bulbs, kirchhoff?s rules, internal resistance, steps of solving circuit problem, example: simple circuit, group problem: circuit, electrical power, power: battery; resistor; capacitor, energy balance, prs questions: more light bulbs.