In this section we introduce steady-state electric charge flow and make multiple analogies with fluid flow. We start by introducing the idea of a circuit, where a fluid (or charge) returns to its orig...In this section we introduce steady-state electric charge flow and make multiple analogies with fluid flow. We start by introducing the idea of a circuit, where a fluid (or charge) returns to its original location or flows in a circular manner. Wire acts as pipes and a batteries like pumps. Resistors introduce dissipative effects.