Elfidwi_bilphys17_j1819_ec_cbr.docx

Critical Book Report

Tittle of The Book: Fundamentals of Electric Circuits

CREATED BY: ELFI DWI ANSA NAINGGOLAN 4173121013 BILINGUAL PHYSICS EDUCATION 2017

PHYSICS DEPARTEMENT FACULTY OF METHEMATICS AND NATURAL SCIENCES MEDAN STATE UNIVERSITY 2018

Alexander, Charles K., Sadiku, Matthew N.O., 2009, Fundamentals of Electric Circuits, New York: McGraw-Hill Introduction Thank you I pray to the presence of God, because thanks to His mercy I can complete this task. I completed the Critical Book Review "Thevenin's Theorem" to fulfill the applicable task requirements. To complete this task, I used a book called Fundamentals of Electric Circuits by Charles K. Alexander and Matthew N.O. Sadiku. I use this book because this book covers material assignments provided and also this book has helped me in completing routine tasks. Summary Thevenin’s theorem states that a linear two-terminal circuit can be replaced by an equivalent circuit consisting of a voltage source VTh in series with a resistor RTh, where VTh is the open-circuit voltage at the terminals and R Th is the input or equivalent resistance at the terminals when the independent sources are turned off. The proof of the theorem is how to find the Thevenin equivalent voltage and resistance . To do so, suppose the two circuits in are equivalent. Two circuits are said to be equivalent if theyhave the same voltage-current relation at their terminals. If the terminals are made open-circuited (by removing the load), no current flows, so that the open-circuit voltage across the terminals in must be equal to the voltage source, since the two circuits are equivalent. Thus is the opencircuit voltage across the terminals that is, VTh = Voc As mentioned earlier, a linear circuit with a variable load can be replaced by the Thevenin equivalent, exclusive of the load. The equivalent network behaves the same way externally as the original circuit.Consider a linear circuit terminated by a load.The current through the load and the voltage across the load are easily determined once the Thevenin equivalent of the circuit at the load’s terminals is obtained. IL = VTh / RTh+RL VL = RLIL Critical Evaluation This book has many advantages, including: 1. Language is easy to understand 2. The book is colored 3. Each step is given a picture 4. Have a lot of examples Conclusion This book is quite good because the material contained in the book is quite complete. This book also provides enough examples of questions that can help me complete the assignment