Charles K. Alexander, Matthew N.O. Sadiku
ISBN #9780072977189
3rd Edition
1,316 Questions
Homework Questions
Fundamentals of Electric Circuits is a comprehensive guide that introduces readers to both the basic concepts and advanced methods of circuit analysis. It starts with foundational principles such as electric charge, current, voltage, and essential laws like Ohm’s and Kirchhoff’s, gradually advancing to systematic analysis techniques, including nodal and mesh analysis. The book also delves into AC circuit analysis with sinusoids, phasors, and power concepts while exploring specialized topics such as op amps, frequency response, and two-port network theory. By interweaving theoretical principles with practical applications and simulation tools like PSpice, it equips students and professionals with a versatile toolkit for tackling a wide range of electrical engineering challenges.
Chapter 1
Basic Concepts
Chapter 2
Basic Laws
Chapter 3
Methods of Analysis
Chapter 4
Circuit Theorems
Chapter 5
Operational Amplifiers
Chapter 6
Capacitors and Inductors
Chapter 7
First-Order Circuits
Chapter 8
Second-Order Circuits
Chapter 9
Sinusoids and Phasors
Chapter 10
Sinusoidal Steady-State Analysis
Chapter 11
AC Power Analysis
Chapter 12
Three-Phase Circuits
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Chapter 13
Magneticliy Coupled Circuits
Chapter 14
Frequency Ressonse
Chapter 15
The Laplace Transform
Chapter 16
The Fourier Series
Chapter 17
Fourier Transform
Chapter 18
Two-Port Networks
Problem 1
How many coulombs are represented by these amounts of electrons: (a) $6.482 \times 10^{17}$ (b) $1.24 \times 10^{18}$ (c) $2.46 \times 10^{19}$ (d) $1.628 \times 10^{20}$
Varsha Aggarwal Numerade Educator
Problem 2
Find the current flowing through an element if the charge flow is given by: (a) $q(t)=(t+2) \mathrm{mC}$ (b) $q(t)=\left(5 t^{2}+4 t-3\right) \mathrm{C}$ (c) $q(t)=10 e^{-4 t} \mathrm{pC}$ (d) $q(t)=20 \cos 50 \pi t \mathrm{nC}$ (e) $q(t)=5 e^{-2 t} \sin 100 t \mu \mathrm{C}$
Problem 3
Find the charge $q(t)$ flowing through a device if the current is: (a) $i(t)=3 \mathrm{A}, q(0)=1 \mathrm{C}$ (b) $i(t)=(2 t+5) \mathrm{mA}, q(0)=0$ (c) $i(t)=20 \cos (10 t+\pi / 6) \mu \mathrm{A}, q(0)=2 \mu \mathrm{C}$ (d) $i(t)=10 e^{-30 t} \sin 40 t$ A, $q(0)=0$
Problem 4
Two coils connected in series-aiding fashion have a total inductance of $250 \mathrm{mH}$. When connected in a series-opposing configuration, the coils have a total inductance of $150 \mathrm{mH}$. If the inductance of one coil $\left(L_{1}\right)$ is three times the other, find $L_{1}, L_{2},$ and $M$ What is the coupling coefficient?
Kajal Gautam Numerade Educator
Problem 5
If the voltage across a 5 -F capacitor is $2 t e^{-3 t} \mathrm{V}$, find the current and the power.
Amit Srivastava Numerade Educator
Problem 6
Determine $v_{1}, v_{2},$ and the power dissipated in all the resistors in the circuit of Fig. 3.50.
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