TAILIEUCHUNG - Electric Circuits, 9th Edition P14

Electric Circuits, 9th Edition P14. Designed for use in a one or two-semester Introductory Circuit Analysis or Circuit Theory Course taught in Electrical or Computer Engineering Departments. Electric Circuits 9/e is the most widely used introductory circuits textbook of the past 25 years. As this book has evolved over the years to meet the changing learning styles of students, importantly, the underlying teaching approaches and philosophies remain unchanged. | 106 Techniques of Circuit Analysis assessment problems Objective 2 Understand and be able to use the mesh-current method Use the mesh-current method to find the power dissipated in the 2 il resistor in the circuit shown. Answer 72 W. Use the mesh-current method to find the mesh current za in the circuit shown. Answer 15 A. Use the mesh-current method to find the power dissipated in the 1 il resistor in the circuit shown. Answer 36 W. NOTE Also try Chapter Problems and . The Node-Voltage Method Versus the Mesh-Current Method The greatest advantage of both the node-voltage and mesh-current methods is that they reduce the number of simultaneous equations that must be manipulated. They also require the analyst to be quite systematic in terms of organizing and writing these equations. It is natural to ask then When is the node-voltage method preferred to the mesh-current method and vice versa As you might suspect there is no clear-cut answer. Asking a number of questions however may help you identify the more efficient method before plunging into the solution process Does one of the methods result in fewer simultaneous equations to solve Does the circuit contain supernodes If so using the node-voltage method will permit you to reduce the number of equations to be solved. The Node-Voltage Method Versus the Mesh-Current Method 107 Does the circuit contain supermeshes If so using the mesh-current method will permit you to reduce the number of equations to be solved. Will solving some portion of the circuit give the requested solution If so which method is most efficient for solving just the pertinent portion of the circuit Perhaps the most important observation is that for any situation some time spent thinking about the problem in relation to the various analytical approaches available is time well spent. Examples and illustrate the process of deciding between the node-voltage and mesh-current methods. Example .

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