SYLLABUS PHYS-4202 FALL 2018
GENERAL
Physics 4202 is the basic Electromagnetism course for students majoring
in Physics or a related subject. It is typically taken by seniors or juniors.
It is required for physics majors, and useful also for students in may
other areas in science and engineering.
This Syllabus includes important information about the course: students
are responsible for knowing its contents and should read it thoroughly.
PREREQUISITES
The freshman and sophomore Physics sequences or their equivalent, are required. Knowledge
of elementary Special Relativity at the level of PHYS 2503 is
desirable. It is useful for students to be familiar with Classical
and Quantum Mechanics at the 4-level, but this is not required.
Knowledge of mathematical techniques at the usual level
for an upper division Physics student is expected, including
Calculus, Linear Algebra and simple differential equations. Knowledge
of Fourier analysis would be very useful. Some more
advanced mathematics will be introduced in the course itself. Some
knowledge of programming (C++, Fortran) or symbolic (Mathlab, Mathematica...)
languages will be useful, but no sophistication in these things is expected.
Students contemplating taking the course who are not sure
they have the background, or who formally are lacking any
prerequisite should consult with the Instructor. Special permissions will be
very liberally granted to all willing to do some extra work.
GENERAL
The course includes three lectures and one recitation session a week. There
is no lab associated with the course.
HOMEWORK AND PROBLEM SOLVING
The homework is the fundamental tool you have to learn the problem solving
skills that you need to really understand Electromagnetism. Basically
all of your grade (as you will see below) will be assigned based on
problem solving. If you think you understand the book and the lectures but
cannot solve the problems, then you do not really understand the material.
On the other hand, attempting to solve the problems will help you a lot
in reaching a true understanding of the material.
Homework will be assigned weekly every Tuesday (Wednesday for the first
week), and be due one week after.
No late homework will be ever accepted. Some of the assigned
problems will be discussed and solved in a group situation at the recitation
session the Thursday after the problems are assigned. Each student, however,
should hand in his or her own version.
Homework will be graded. If illness or other valid reason prevents you from
doing a set, an adjustment
will be made in the denominator of your homework percentage.
Sample solutions will be posted at the course
Canvas or Web site.
In addition to the recitation session work, students are encouraged
to work with other people on the homework, as an informal group.
In group situations, make absolutely sure that you pull your
own weight and that you understand everything on your own terms. By the
same token, be ruthless to expel any freeloaders from the group, if there
should be any: you'll be doing them a favor in the long run. Remember that
ultimately your grade, and in the long run your success as a scientist or
engineer, basically depends on your ability to solve problems
individually.
Attempting all the homework is so important that the grade formula for
the course, as explained below, makes it essentially mandatory. "Attempting"
is of course not the same as "solving correctly": it means trying to.
Handing in solutions copied from another person, or found in the web, would,
be, besides cheating, evidence of lack of interest
in learning, and of inability to keep minimum professional standards:
it would be dealt with accordingly with great severity.
The assigned homework is the minimum amount of practice exercises students
should do. All are encouraged to solve as many additional problems (from
the book or other sources) as possible.
LECTURES AND OFFICE HOURS
Lectures are MWF at 3:35 in room Tate 110. Attendance is very highly
recommended, although not strictly mandatory: however,
students are responsible for all that is said in class. Attendance to
the recitation counts for the grade. There are
office hours by the instructor in Tate 130.25 Wed 4:30 to 5:15, and by the TA at the sane time on Mondays, in Tate 201-09.
TEXTBOOK AND OTHER BOOKS
The official textbook for the course is Griffiths, "Introduction
to Electrodynamics", fourth edition. If you are broke find a
used copy of a previous edition (but note that numbering of equations and
problems may be slightly inconsistent). You should count on keeping this book
after the course, do not resell it: workers do not sell their good tools.
The textbook is deceptively thin: many steps are skipped (some of those
will be covered in the lectures) and students are expected to work them
out on their own: do so. You may find this difficult at first, but in the long run
it'll be good for you. The textbook will be followed relatively
closely, but not slavishly so. Examples as in the book, or
similar ones, will be discussed in class.
If you can, buy also another book for extra reference. No specific 'second
book' can be recommended for everybody. The rule is:
if you find yourself always borrowing the same book from a friend, or
the Library, because you like the explanations in that book better than
Griffith's, then you should buy your own copy.
There are many other Electromagnetism books; just do a google
search. They are of various levels
of difficulty. Jackson and Panofsky&Philips are graduate level. Saslow's
is more elementary than Griffiths and has many interesting insights.
Reif and Milford is an old classic...
Keep also handy your 2503 book in case you have to review
anything. The same goes for your math books. Also, you need Tables to look
up integrals, series, or special function properties. Do not waste time
doing computations for which you can look up the answer. If you have access to
a symbolic package such as Mathematica, these are built-in: the textbook
recomends Mathematica. In hard copy, the
Gradshtein-Ryzhik "Tables" and the Abramowitz-Stegun "Handbook of special
functions" are the holy writ.
MATERIAL COVERED
We will cover approximately the first seven chapters
in the textbook. There will be a little more emphasis
than in the book on the properties of actual materials as opposed to
'in vacuum' electromagnetism. Most of the math material in Chapter 1 will
be covered at the point where it is first needed, not at the beginning.
Always read, before a lecture, the material in the book that you expect
will be covered in that lecture. You should expect to find some parts
too difficult to understand on your own: that's where you must pay
extra attention, and ask questions, during the next lecture. Take notes
in class and read and edit them within 24 hours: this transfers information
from your short-term memory to long-term.
EXAMS
There will be two one-hour midterms, tentatively on Oct 12 and Nov 16,
or a single one on October 26. There will be a three-hour final on December 17 1:30-4:30,
a date and time
mandated by the University. A make up final will be given only in
the cases where it is strictly required by University rules. There will be no
midterm makeups: students having a legitimate excuse as per University rules
will have the denominators of their exam percentage adjusted properly.
All exam questions will be problems, with a range of difficulty and
scope similar to that in homework.
GRADES
The grades will be determined by two factors:
The regular portion of the grade, R, will be composed of: successful homework
solutions (30% weight), the midterms (30% weight total) and the final (40%
weight). R is expressed as a percentage.
The second, participation, P, grade will be computed as
follows: 80% from the number of homework problems you have seriously
attempted (seriously attempted means you have handed in
a solution showing substantial work, you will get credit
even if your solution was 100% wrong)
10% from your class participation (asking questions etc) as judged by the
instructor and 10% from your dattendance and participation
in the discussion session,
as judged by the TA. A diligent student should find it
rather easy to get a P near 100%.
The overall grade T is determined by the square root of P times R.
T=sqrt(R*P). This means for example, that a student getting P=1 (100%) which
is quite doable, and a regular "exams and homework" grade of 64% (a C
according to the formula below) would have
it transformed into 80% (a B/B+). Students
not attempting the homework are, on the other hand, guaranted an F.
Letter grades will be based on overall grade T with 5% intervals corresponding
to +/- increments, that is 15% increments corresponding to every letter.
Thus, you need 40% to get a D-, 55% to get C-, 70% to get B-, 85% to get A-.
This scheme awards A+ to students getting 95% or higher. The University, for
some bizarre reason, does not recognize the A+ grade, students earning one will
have a plain A in their official transcripts, but will receive a
congratulatory email from the Instructor (which they can frame if they wish).
Students taking the course on an S/F basis must earn at least a C-, a D level grade
is not satisfactory.
INFORMATION
The course is on CANVAS. There is also a web page in the Physics Deaprtment,
see https://www.physics.umn.edu/classes/phys/2018/fall/Phys%204002.001/index.html
Brief solutions to each homework set will be posted in one place or
both, depending on what works, in .pdf format. Other information about the
course will be posted there.
Students should periodically check the site, as they are responsible
for knowing the course announcements and other information posted.
OFFICIAL WARNING
No cheating or other unprofessional behavior will be tolerated. The minimum
penalty for cheating is an automatic F for the course. All cases will be
considered for whatever maximum the Supreme Court allows.
OTHER STUFF (LEGAL):
For anything not covered above, all relevant University Policies will be
followed. A very comprehensive index of such policies is at
http://www.policy.umn.edu