DC CIRCUIT TERMINOLOGYBasic DC TheorySummaryThe important information concerning basic DC circuits is summarized below.DC Circuit Terminology SummaryThere are four types of circuit diagrams.- Schematic diagram- One-line diagram- Block diagram- Wiring diagramResistivity is defined as the measure of the resistance a material imposes oncurrent flow.Temperature coefficient of resistance, a (alpha), is defined as the amount ofchange of the resistance of a material for a given change in temperature.A closed circuit is one that has a complete path for current flow.An open circuit is one that does not have a complete path for current flow.A short circuit is a circuit with a path that has little or no resistance to currentflow.A series circuit is one where there is only one path for current flow.A parallel circuit is one which has two or more components connected acrossthe same voltage source.Equivalent resistance is the total resistance of the resistors in parallel.ES-02 Page 22 Rev. 0

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