EE 2120 Chapter : 4 Power Energy
Document Summary
Circuit analysis is used to predict the behavior of the electric circuit and plays a key role in the design process. The design process has analysis as a fundamental step. Comparison between desired behavior (specifications) and predicted behavior (circuit analysis) leads to refinements in the design. In order to analyze an electric circuit, we need to know the behavior of each circuit element (in terms of voltage and current) and the constraints imposed by interconnecting the various elements. Polarity reference for voltage can expressed by plus and minus signs. Reference direction for the current is indicated by an arrow. Attributes: two terminal device, mathematically described in terms of current and/or voltage, can"t be subdivided into other elements. Definition: power is the time rate of expending or absorbing energy, measured in watts (w). A problem specifying to find the current or. Find the voltage is always accompanied by a definition of direction.
