Fundamentals of Electric Circuits: 2026 Release

Good circuit analysis starts with a few essential questions: how do voltage and current relate, which method makes a network easier to solve, and what changes when a circuit moves from DC to AC? Fundamentals of Electric Circuits: 2026 Release builds answers in a deliberate progression, combining theory, worked examples, practice problems, and real-world applications.

From basic laws to confident analysis

The opening section establishes the language of circuit analysis: charge, current, voltage, power, circuit elements, Ohm’s law, Kirchhoff’s laws, and series and parallel networks. Readers then work through methods such as nodal and mesh analysis and learn to apply circuit theorems, including superposition, source transformation, and Thevenin’s and Norton’s theorems.

Follow the circuit into AC

After DC circuit analysis, the book develops the tools needed for alternating-current systems. Topics include sinusoids and phasors, sinusoidal steady-state analysis, AC power, three-phase circuits, magnetically coupled circuits, and frequency response. The sequence helps place individual techniques within the broader work of understanding circuit behavior.

Methods for more advanced problems

The final section introduces Laplace-transform applications and Fourier analysis. Together with the earlier chapters, these topics give the book a wide scope—from basic circuit quantities through commonly used analytical methods and advanced circuit analysis.

Practice alongside the theory

Worked and extended examples make the reasoning behind a solution visible, while review questions, practice problems, and homework problems give readers ways to test their understanding. The book also includes real-world applications, connecting mathematical methods with practical circuit contexts.

A structured reference for circuit studies

Written by Charles K. Alexander, Matthew N. O. Sadiku, and Steven J. Fredette, this 2026 Release is a substantial text for readers studying electrical engineering and related fields. Its organized coverage makes it useful both for following a course from fundamentals onward and for revisiting a particular analysis method when a circuit problem calls for it.