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An integrated study of AC and DC circuits in which the sinusoidal system is introduced early in the course. The course covers the concepts of Ohm?s Law, Kirchhoff?s Laws, and DC circuits such as series circuits, parallel circuits, and series-parallel circuits. The study of capacitors and inductors serves as an introduction to the sinusoidal system and the behavior of R, L, and C in such a system. The laboratory component includes the use of test instruments in experiments dealing with Ohm?s Law, series circuits, parallel circuits, and series-parallel circuits, followed by a study of internal resistance and loading. The final experiment supplies facility in the applications of the oscilloscope.