LAWRENCE UNIVERSITY Spring 2007

PHYSICS 230: Electricity & Magnetism

INSTRUCTOR: Megan K. Pickett

OFFICE: Youngchild 105

**OFFICE HOURS**: MWF 1:30-3pm; R 10am-11am; & by appointment

PHONE: (920) 993-6269

EMAIL: megan.pickett@lawrence.edu

LECTURE TIMES: MWF 11:10 - 12:20 AM

LECTURE ROOM: YOU 115

CLASS WEBSITE: http://www.lawrence.edu/fast/pickettm/p230s07/

Welcome to Physics 230, Electricity and Magnetism. This course is primarily concerned with electrostatics and magnetostatics, though we will touch upon electromagnetic waves and radiation at the end of the term, time permitting.

**TEXT:***Introduction to Electrodynamics (3e)*, by Griffiths. This is a
great text; it is very readable, almost conversational, and loaded
with good examples and problems. It's a classic, and hands down my favorite text
from my undergraduate days.

**Other Texts:** These aren't required, but they can be good
resources. I recommend our own David Cook's *The Theory of the
Electromagnetic Field*, which is elegantly written and takes a
somewhat different approach to the subject than does Griffiths. At a
higher level (essentially grad school) is Jackson's *Classical
Electrodynamics*, a book famous in grad school circles for its
ubiquity and somewhat opaque abstractness; at the lower end is
Purcell's *Electricity and Magnetism*. Of course, no selection
of texts would be complete without some Feynman, in particular *The
Feynman Lectures on Physics, v. II*. I won't mention Marion's
*Classical Electromagnetic Radiation*, except to say that it isn't
particularly relevant to most of the course, and that I surely did hate the text when I was an
undergraduate, but that's me. I will put copies of Cook, Feynman,
Jackson and Purcell on reserve at the library.

**READINGS: **I expect you to read through the assigned reading
prior to class. Despite the detail of the schedule, it is still
tentative; I would like to be fairly flexible depending on class needs
or unforseen circumstances. Yes, there are several important concepts
that I feel we must cover, but I do not want the course to be a race
to see how far and fast we can get through the text. If we fall
behind or zip through some chapters, I'll let you know the schedule
change in lecture and online as soon as possible.

**ASSIGNMENTS:**
There will be eight homework assignments;
your averaged homework score will constitute 30% of your total grade.
Students are encouraged to work in groups, but **you must turn in
your own work in your own words**. Problem sets are the best
possible way for you to learn the class material and prepare for
exams. Extensive solutions will be provided in class on the due
dates, and so I cannot accept any late homework.

My homework
deal for you: If you turn in **EVERY** assignment **AND** make
an honest attempt to answer **EVERY** question on each assignment,
then I will drop your lowest homework score. This is meant to
encourage you to work each and every problem assigned. If you have
any difficulty, drop by my office, send me an email, call me, use morse code or
sema-fore--however you do it, let me know you have a question, and I
will be happy to help.

The homework assignments are posted separately on the website here, with the corresponding due dates.

**TESTS AND FINAL:** There will be two tests and a final in this
course. The final examination will be cumulative,
while emphasizing material covered since the third test. The cumulative
section of the final will be based on the questions in the first two
exams that gave the class the most difficulty. I design the final in
such a way in order to reduce the amount you need to study at the end
of the year as well as offer the class a chance at showing me that it
has mastered problems that caused difficulties earlier.

All exams are closed book and closed notes, although each exam
will include a list of useful (and not particularly useful) formulae. You may use
a calculator, but whatever device you use must NOT connect to the internet or
in any way store data prior to the exam.
The equation list means that you will not need to memorize most equations, but you will have
to be able to recognize which formula is appropriate and what it
means. The equation list for each exam will be made available with each
practice exam (see below), so you should assume that if a particular equation
is NOT on the list, you should be prepared to remember it. *In particular, you WILL
be expected to remember Maxwell's Equations at every stage of their development in
this course.*

I will supply the class with "practice exams" the week before each exam as a guide to help you study, and to give you and idea of what my exam questions are like. I am willing to schedule a review session to discuss these or any other problems before each exam if we can find a time that most people can make, otherwise we can go over the practice questions during my office hours. In any case, solutions to the practice tests will NOT be provided. Since each exam takes place during a 70 minute class period, I anticipate that the midterms will contain about 4 problems (though, of course, physicists being physicists, you just know that some of those problems will have multiple parts to them).

COURSE GRADE:

Assignment Average |
30% |

Exam 1 |
20% |

Exam 2 |
20% |

Final Exam |
30% |

Total Grade |
100% |

Grades will be posted on the website and updated weekly, with a running estimated course grade computed after the first exam. My hope is that a curve won't be needed, and that using the standard scale of 100-90% = A, 89-80% = B and so on will be sufficient. However, I will curve if necessary, in which case the curve will be designed such that the average score sets the position for a B-. I will not raise the curve, however. If you all get 95%'s, you all get A's and I'll go home this summer a very happy professor.

**COMMUNICATION:** An important asset in any field is the ability to communicate
your ideas clearly. With this in mind, I expect all homework and exams to
be written legibly and presented neatly. Plots and figures should be labelled
accurately and captioned if necessary. Finally, your answer to any question MUST
include the appropriate units, if applicable.

**PLEASE NOTE:**
If you EVER need help, please feel absolutely free to contact
me in any way that is convenient. I have plenty of office hours, and
I am always willing to set aside separate times if those are
inconvenient. NOTHING I DO AT WORK IS MORE IMPORTANT THAN HELPING MY
STUDENTS. Do not wait until it is too late. I'm here to help.

**ACADEMIC DISHONESTY:** Academic dishonesty of any sort will not be
tolerated. Academic dishonesty includes, but is not limited to,
plagiarism, cheating on exams, falsifying experimental data, and providing
unauthorized aid to another student. If you have any questions, please
feel free to talk to me or consult the student guide. Any material turned into
me must have the honor pledge written (or abbreviated, yes, that's fine, too) and
signed, or I will not grade it.

**ADA AND ANTIDISCRIMINATION STATEMENTS:** In compliance with
the Americans With Disabilities Act (ADA), all qualified students
enrolled in this course are entitled to reasonable accommodations. It
is your responsibility to inform me of any special needs you may need
before the end of the second week of classes. I also believe firmly
in the right for each student to be respected, both by a student's
peers and her or his instructor. I am therefore strongly committed to
ensuring that the antidiscrimination policy established at Lawrence will be
honored in my class.