ELEC 225: Circuit Theory I
Bucknell University, Fall 2002

Course Objectives:

Students finishing this course will understand fundamental circuit analysis techniques, including sinusoidal steady-state methods. Students will be prepared to take ELEC 226 in the next semester, which will include time-domain circuit analysis, Laplace transform methods, and frequency analysis of circuits and signals using Fourier series and transforms.

Instructors and Office Hours:

The course will be co-taught by Professors Margaret Wismer and Rich Kozick. Professor Kozick will teach the lectures and Professor Wismer will teach the laboratories.

Richard J. Kozick (Lectures)
Office: Room 220 Dana
Phone: (570) 577-1129
FAX: (570) 577-1822
Email: kozick@bucknell.edu
Margaret Wismer (Labs)
Office: Room 341 Dana
Phone: (570) 577-1269
FAX: (570) 577-1822
Email: wismer@bucknell.edu

Office hour schedule for Professor Kozick for Fall, 2002 is T 10-11 and 3-4, W 1-2, and F 1-2.
Other times can be arranged - talk to me in class, send email, or call.
Refer to the course home page for the most up-to-date office hours.


ELEC 120 and MATH 201, 202. Corequisite: MATH 211.

Required Textbook:

Electric Circuits (Sixth Edition, Revised Printing), by J.W. Nilsson and S.A. Riedel, Prentice-Hall, 2001.

The library has many books on circuit analysis. We encourage you to read a variety of books in order to see different explanations and additional examples.

Optional Supplement:

Introduction to PSpice Manual for Electric Circuits (Fourth Edition), by J.W. Nilsson and S.A. Riedel, Prentice-Hall, 2000.

This supplement to the main textbook includes a CD with OrCad Release 9.2 PSpice software (student version). We will use PSpice in this course for homework and for labs. You will also use PSpice in future courses.

Course Home Page:

The home page for the ELEC 225 course is located at
It can also be accessed by following the link from

The course home page contains homework assignments and solutions, syllabus, links to laboratory assignments, and other course information.


Grades for the course will be determined as follows.

Three in-class exams (10% each)          30% 
Short quizzes and class participation    10%
Final exam                               15%
Homework                                 15%
Laboratories                             30%

Exams and Quizzes:

Three in-class exams will be given on the following dates:
Wednesday, September 25
Monday, October 28
Monday, November 25.
The course will conclude with a comprehensive final exam.

Short quizzes (announced or unannounced) will also be given to check your understanding of the material as we proceed through the course. Missed quizzes cannot be made-up, but your lowest quiz grade will be dropped. We will also do in-class exercises (individually and in groups) that will be counted toward the "Short quizzes and class participation" grade component.


Homework will be assigned regularly to give you practice with the course material. It will be due at the beginning of class on the specified due date. Late assignments will not be accepted because solutions will be distributed and reviewed during class on the due date.

You are allowed and encouraged to work on the homework with groups of your classmates. The purpose of the homework is to practice with the material and to improve your understanding. We encourage you to learn from each other, and also to ask us when you have questions. However, the homework solutions that you submit for grading must be written individually. Be sure that you understand the reasoning for each problem, even if you initially solved the problem with help from your classmates.


Laboratories will be held every other week, on the following dates:
September 5 and 19
October 3, 17, and 31
November 14
December 5

Please refer to the link on the course home page for Professor Wismer's lab materials.

ABET Course Outcomes:

Please see the ABET link on the course home page.

Tentative Outline:

The corresponding chapters in the Nilsson/Riedel text and the quiz dates are indicated. The biweekly labs will be held during weeks 2, 4, 6, 8, 10, 12, and 14.
Week 1: (Chapter 1)
Review of basic electrical quantities, sign conventions.

Weeks 2-3: (Chapters 2 and 3)
Sources and elements, v = i r, KCL, KVL, simple resistor circuits (series, parallel, voltage divider, bridge, Delta-Y)

Weeks 3-4: (Chapter 4 and Appendix A)
Circuit analysis techniques: node-voltages, mesh-currents, Thevenin and Norton equivalents, superposition. Appendix A: review solutions to linear simultaneous equations.
Exam 1: Wednesday, September 25

Weeks 5-7: (Chapters 4 and 5)
Finish topics from Chapter 4. Operational amplifiers: useful circuits with resistors, finite gain models for op amps.

Weeks 7-8: (Chapter 6)
Voltage-current relations for capacitors and inductors, mutual inductance.

Fall Recess:
Begins Friday, October 18 at 5 PM and ends Wednesday, October 23 at 8 AM.

Weeks 9-10: (Chapters 4, 5, 6, and 9)
Review chapters 4-6, begin sinusoidal steady-state circuit analysis.
Exam 2: Monday, October 28

Weeks 11-13: (Chapters 9, 10, and Appendix B)
Sinusoidal steady-state circuit analysis (chapter 9): phasors, impedance, frequency-domain circuit analysis, Thevenin and Norton equivalents, node-voltage, mesh-currents, transformers.
Appendix B: review of complex numbers.
Sinusoidal steady-state power (chapter 10): instantaneous, average, reactive, complex, and rms power; power factor; maximum power transfer.
Exam 3: Monday, November 25

Thanksgiving Recess:
Begins Tuesday, November 26 at 10 PM and ends Monday, December 2 at 8 AM.

Week 14: (Chapter 11)
Three-phase circuits.

Click here for a preview of topics for ELEC 226 in spring, 2003.