**Physics 230**

**Electricity
and Magnetism**

Spring Term, 2002

Lecture: 9:50 - 11:00 MWF, Youngchild 115

Professor: Matthew R. Stoneking

Office: Youngchild 110

Phone: X6724

email: stonekim

Office Hours: Tuesdays 1:30 PM-3:00 PM or by appointment

**Catalog course description: **Develops and explores Maxwell's
equations: charge and current densities, particle motions, electrostatics,
magnetostatics, induction, Maxwell's equations, electromagnetic waves,
responses of matter. Prerequisites: Physics 150 and Mathematics 210. Offered
every year.

**Text***:*

* ***Introduction to
Electrodynamics**, Third Edition, by David. J. Griffiths, Prentice-Hall
(Upper Saddle River, New Jersey 1989). *This is truly one of the best-written
undergraduate physics texts around. Read
it. Enjoy it.*

**Other E&M Texts:**

**The Theory of the Electromagnetic Field, **by
David M. Cook, Prentice-Hall (1975). *A
fine introductory E&M text written by a fine member of the *

* ***Electricity and
Magnetism**, by E.M. Purcell, McGraw-Hill (1985). *This is the 2nd volume in the *

**Electromagnetic Fields and Waves, **by
Lorrain, Corson, and Lorrain, W. H. Freeman and Company (1988). *This text is an intermediate undergraduate
text.*

**Classical Electrodynamics**,** **by J. D. Jackson, John Wiley and Sons
(1962). *This is the standard graduate level E&M text. It is a classic, but treats the subject from
a rather mathematical/abstract perspective.*

**The Feynman Lectures on Physics**, **volume II**, by Feynman, Leighton, and
Sands, Addison-Wesley (1964). *The Feynman lectures are required reading
for all serious physicists.*

**Grading policy:**

Grades will be determined from the following components, weighted as indicated:

Midterm Exam I 20%

Midterm Exam II 20%

Final Exam 30%

Problem Sets 20%

Class
Presentation, Attendance, Participation 10%

**Exams:**

There will be two closed book, one hour midterm exams, and a comprehensive three hour final exam.

Midterm Exam I is tentatively scheduled for Friday 26 April.

Midterm Exam II is tentatively scheduled for Monday 20 May.

The Final Exam
is Wednesday 12 June at 1:30 PM.

**Problem sets:**

Problem sets will be assigned on a (roughly) weekly basis. Note the weighting of the problem sets toward the final grade. This reflects the importance attached to completing problem assignments. You are expected and encouraged to work together on the problem sets, but must write up your own solutions.

**Presentations,
Attendance and Participation:**

This component
of your grade reflects the importance of actively participating in the
class. Attendance will not be taken
explicitly, but you are expected to ask questions in class, respond to my questions,
and show evidence of having read the textbook.
Each student will also have the opportunity to present one or two
problem solutions to the rest of the class some time during the term.

**Outline of the Course:**

I: Electrostatics

· Chapter 2: Electrostatics

· Chapter 3: Special Techniques

· Chapter 4: Electric Fields in Matter

II: Magnetostatics

· Chapter 5: Magnetostatics

· Chapter 6: Magnetic Fields in Matter

III. Electrodynamics

· Chapter 7: Electrodynamics

· Chapter 9: Electromagnetic Waves

**Course
Schedule**

_{} _{}

**Unit I: Electrostatics**

**Week 1**

*Day 1 Monday 1 April*

· Overview of the course

· The Laws of Electrostatics

Coulomb’s Law

The Principle of Superposition

· The electric field

· Continuous charge distributions

*Day 2 Wednesday 3 April*

**Read**

· Electric field lines

· Gauss' Law (integral form)

*Day 3 Friday 5 April*

**Read**

· Applications of Gauss’ Law

· The divergence theorem

· Gauss’ Law (differential form)

**Week 2**

*Day 4 Monday 8 April*

**Read**

· Electric potential

·
Stokes’ theorem and the curl of **E**

· Poisson’s equation

·

*Day 5 Wednesday 10 April*

**Read**

· Conductors

· Electrostatic boundary conditions

· Capacitance

· Electrostatic energy

*Day 6 Friday 12 April*

Problem presentation day

**Week 3**

*Day 7 Monday 15 April*

**Read**

·
Properties of solutions to

· Uniqueness theorems

· Separation of variables (Cartesian coordinates)

*Day 8 Wednesday 17 April*

**Read**

· Separation of variables (spherical coordinates)

· Example: Conducting sphere in uniform E field

*Day 9 Friday 19 April*

**Read**

· Electric dipole moment

· Electric multipole expansion

**Week 4**

*Day 10 Monday 22 April*

**Read**

·
Numerical solutions to

*Day 11 Wednesday 24 April*

**Read**

· Polarization

· Bound charges

· Electric displacement

· Linear dielectrics

· electric susceptibility/dielectric permittivity/dielectric constant

*Day 12 Friday 26 April HOUR EXAM I*

**Week 5**

*Day 13 Monday 29 April*

**Read**

· Examples of problems with dielectrics

_{} _{}

**Unit II: Magnetostatics**

*Day 14 Wednesday 1 May*

**Read**

· The laws of magnetostatics

· Oersted’s observation

· Lorentz force

· Magnetic field

· Biot-Savart law

· Definition of the Ampere

*Day 15 Friday 3 May*

**Read**

· Current density and the continuity equation

· Magnetic field lines

· Ampere’s Law

· Divergence of B

**Week 6**

*Day 16 Monday 6 May*

**Read**

· Applications of Ampere’s law

*Day 17 Wednesday 8 May*

**Read**

· Magnetic vector potential

· Multipole expansion

· Magnetic dipole moment

· A little bit of quantum mechanics

No class on *Friday 10
May*: Midterm Reading Period

**Week 7**

*Day 18 Monday 13 May*

Catch-up / get-ahead / problem presentation day

*Day 19 Wednesday 15 May*

**Read**

· Magnetization

· Paramagnetism, diamagnetism, ferromagnetism

· Bound currents

· The auxiliary field

_{} _{}

**Unit III: Electrodynamics**

_{} _{}

*Day 20 Friday 17 May*

**Read**

· Example of a problem with magnetization

· Ohm’s law, resistivity and resistance

· Joule heating

·
Electromotive force

**Week 8**

*Day 21 Monday 20 May HOUR EXAM II*

*Day 22 Wednesday 22 May*

**Read**

· Motional emf

· Faraday’s law

· Applications of Faraday’s law

*Day 23 Friday 24 May*

**Read**

· Inductance

·
Magnetic energy

**Week 9**

No class on *Monday 27
May:* Memorial Day

*Day 24 Wednesday 29 May*

**Read**

· Displacement current

· Maxwell’s equations

*Day 25 Friday 31 May*

**Read**

· The wave equation

· Electromagnetic waves in vacuum

**Week 10**

*Day 26 Monday 3 June*

**Read**

· Electromagnetic waves in dielectric media

· Index of refraction

· Radiation

*Day 27 Wednesday 5 June*

Catch-up / get-ahead / problem presentation day

*Day 28 Friday 7 June*

Review for Final Exam

**Final Exam: Wednesday
12 June 1:30 PM**

Some of the information contained
in this syllabus can also be found at **http://www.lawrence.edu/fac/stonekim/courses.htm**