Physics 106
Physics II - Electricity, Magnetism and Optics
Spring Semester 2008

Locations and times:

Classroom Meetings: MWF 10:00 - 10:50 C101 CNS
 
Laboratory: Room WS005 of CNS.
 
Physics Help Clinic / Discussion Workroom (optional): MTWTh evenings, 7:00 - 9:00 PM, E105 CNS, staffed by experienced and friendly members of the IWU Society of Physics Students

Textbooks and supplies:

Serway & Jewett, Vol. 2, Physics for Scientists and Engineers, 7th Ed. (Thomson)

Optional Resource: Interactive WEB site for the Serway & Jewett text (useful for test preparation)

Also available is an optional Student Study Guide, Volume 2 for the Serway & Jewett text (useful for test preparation)

Andrew Elby, Portable TA Problem Solving Guide, Vol. 2 (Prentice-Hall), on reserve in Room C005 of CNS and also available in Ames Library

General Physics 106 Laboratory Notes, available from instructor, updated weekly

A pocket calculator will be useful for problem sets and tests and in the laboratory (it might not hurt in class either).

Instructor:

Gabe Spalding C006B CNS
Office hours: M 2:00 - 3:50
W 2:00-3:50
Th 9:00-9:50
gspalding@titan.iwu.edu
556-3004
E-mail is always welcome.

Course Overview:

The spring semester, 106, covers the science and technology of Thomas Edison, Michael Faraday, and James Clerk Maxwell (as well as some more from Galileo Galilei and Isaac Newton). First we will define and discuss electricity and magnetism (E&M) and explore the rather interesting connections between the two. Eventually we will branch off from E&M and discuss the wave nature of light and geometrical optics (light is actually related to E&M, as we will see). The ideas we learn here are fundamental, and have direct applications ranging from electrical power, to modern electronics and instrumentation, to our understanding of neurons (shown below, interfaced to a silicon chip by Harold Craighead's group at Cornell).

In Physics 106 more of the assignments will come from the "General Problems" section ending each chapter; identifying the sort of approach required is an essential part of these homework problems. In our view, the exams involve the same sort of exercises as these homework sets.

Through this course, you will develop strong problem solving skills, necessary to apply common scientific concepts in a wide variety of situations. You will begin to understand technical concepts, some intuitive and some counter-intuitive, on a deep level. You will hone all of these skills through experiences in the classroom and in the laboratory, where you will have first-hand experience with some of the phenomena underlying natural processes. You will gain further experience in reasoning deductively and mathematically, using calculus, algebra, trigonometry, and geometry in order to understand scientific descriptions of reality.

It is important to note that calculus is a part of this course. Students contemplating a major in physics should take (the calculus-based) Physics 106 and students interested in our 3:2 pre-engineering program are required to take calculus-based physics. Those intending to become Chemists are also advised to take Physics 106, while pre-medical students typically take Physics 102.

Course Policies

Attendance:

It is important that you attend all classes and lab meetings in order to benefit from this course and fulfill your responsibilities as a participant.

The laboratory will not meet every week (see the attached schedule). There will be a 20% penalty for any unexcused absence from the regularly scheduled laboratory period.

Assignments and Tests:

I will often send you e-mail and announcements. It is your responsibility to read these. It is also your responsibility to maintain your IWU e-mail account so that your mailbox does not exceed its allotted quota.

Written work must be handed in at the start of the class period at which it is due. This syllabus also contains reading assignments that are necessary to prepare you for class discussion. Please do the reading before attending the class related to that material.

There will be four exams during the term:

·       Monday 2/4 (Ch 23-25: Electrostatics)

·       Friday 2/22 (Ch 26-28: Basic Circuits)

·       Wednesday 3/12 (Ch 29-31: Electromagnetic Theory).

·       Wednesday 4/9 (Ch 32-34: Electrodynamics & AC Circuits).

There will be a final exam at 3:30 PM on Thursday, 4/24. The first hour of that exam will cover Chapters 35-38; the second hour will review E&M basics.

You will need two lab notebooks. Each must contain sewn-in pages, rather than spiral-bound pages. In addition to your lab notebooks, brief lab reports will be due at the start of the next week’s lab meeting. The report following your final lab section is due one week after that meeting, by the time your section would normally meet.

Grading procedures:

Written exercises: the following simple scheme emphasizing understanding over details will be applied to each problem or substantial part thereof: 4 points will be awarded for a correct numerical answer, 3 points for correct application of concepts, 2 points for a significant attempt with conceptual errors, and 1 point for any attempt.

Exams: understanding concepts is key. On the problem-solving exams, partial credit will be awarded for sensible efforts even without completely correct answers. No partial credit will be given for the multiple-choice questions.

Laboratory: to be discussed separately at first lab session.

Final course grades will be computed using the following weighting

·  Four Exams during the term, each worth 125 points

·  Final Exam = 170 points

·  Laboratory = 200 points [Note: ALL labs must be completed to pass the course!]

·  Written exercises = 80 points

Lateness policies:

Labs must be completed and turned in on the due dates unless cleared in advance by the lab instructor.

Homework: You are permitted a single one week extension without any penalty during the semester when you are stressed out with work; however, in order to receive the extension you must, at the time the homework is due, turn in a dated sheet of paper indicating that you are giving yourself a "free extension." Save it for when you really need it.

Otherwise, work turned in by the start of class following the due date will be assessed a modest 15% penalty. Work handed in anytime after that, but before the end of the semester deadline, will not be graded but will be given about 1/3 credit for a reasonable effort. Please do not split up the assignments.

Exams must be taken at the stated times, except by prior agreement, with plenty of advance notice.

Advice

The following suggestions are based on the experience of previous students:

Stay up to date on the reading; preferably read the assigned material twice; for example, once before the relevant lecture, and once after.

Read with pencil in hand to work through your reading. Ask yourself, "What is the main point of each section?" and answer that question.

When you take notes in class, don't just write down equations! Qualitative information is often essential. Be thorough!

Review your class notes between lectures, and come prepared to ask questions. Annotate your class notes as you read them.

Use the posted solutions to problems and exams as a study aid.

If you are interested in more resources, look at the materials on reserve for the course in the library.

Feel free to ask for advice from any students who have taken either Phys 102 or 106 before.

Don't prejudge your ability to master the material. Generations of students have done it before you.

There is no magic method of presenting the material that we can use to make it easy.

There are many resources available to assist and guide you. These include the office hours of the course instructor and a "Discussion Workroom" or Physics Help Clinic run by students on Monday through Thursday evenings. In addition to the posted office hours, you may try dropping in on your instructor or you can arrange a meeting time at any class or by e-mail.

Please do not hesitate to contact your instructor and ask for help. No question or topic is too small! If you are having a lot of trouble with the homework, please be sure to meet with your instructor as soon as possible. Even if you are not having difficulty with the homework, it may be useful to have others monitor your approach and to offer generalized feedback.

Feedback: If you have concerns about the course or ideas about how to make it better, please let your instructor know immediately, either in person or by e-mail. We are very happy to implement suggestions, and we have had great success with student suggestions in the past.

Honor code:

The important guiding principle of academic honesty is that you must never represent the work of others as your own. The following guidelines should govern your behavior in the course; please request clarification if you find yourself in any doubtful situations.

You may seek assistance from the instructor, or at the Physics Help Clinic or from your fellow students with the assigned exercises and with preparing for class discussions. You may also work together with other members of the class on these assignments, and this is often quite beneficial. However, for your own good, avoid situations in which you contribute either too much or too little to such collaborations. Just copying someone else's work is clearly a representation of another's work as your own and is a violation of the community. [This includes copying the homework solutions when preparing your extension homework.] Your textbook gives the answers for most of the odd-numbered exercises. These are given so that you will know if you have solved problems correctly. It is not sound learning procedure to try to work backwards from given answers, but doing so is not a violation of the honor code for this class.

Solutions to the written exercises will be placed in a binder in the Physics Reading Room (C005). If you are doing a late set for 1/3 credit, you may consult the solutions, but you may not copy them.

Exams must be entirely your own work. Detailed instructions will be given on the exams themselves and discussed in advance. You will be allowed to use a page of notes prepared in advance and a calculator, but no other materials will be permitted. No collaboration of any sort is allowed once an exam begins.


Tentative Schedule

Problems of the Week

Date

Lecture Topic

Reading Assignment
(To be read in
preparation for lecture)

Lab of the Week

HW Set#1 Due W: Ch 23 # 6, 10, 18, 42

HW Set#2 Due F: Ch 23 # 22, 25, 29, 51

HW Set#3 Due M: Ch 23 # 34, 38, 40

Jan. 7

What is Charge?
What is the origin of Inverse Square Laws?

Ch. 23, p. 642 -664
A.16-A.19

Jan. 9

Puzzler: What use is a simple loop of charge? (The Pocket Electroscope)
Electric Fields and "Continuous" Charge Distributions:
The Superposition Principle, and
an example of Integration (# 23.53, a loop of charge)

Ch. 23

Jan. 11

Reliable Sources I: Self-Limiting Processes
(example: Batteries),
Electric Dipoles, Electric Field Lines,
Integration Revisited (#23.51 reviewed in outline)
(Reading for lab next week:
Motion of Charged Particles in a Uniform Field)

Ch. 23

Introductory Lab Meeting:
Common meters do not measure charge or electric field directly.
We introduce voltmeters, scopes and, importantly,
the idea of FLUX
(by rotating a magnetic field detector in a uniform Magnetic field).

HW Set#4 Due W: Ch 24 # 3, 4, 6, 54;

HW Set#5 Due F: Ch 24 # 14, 46, 48, 52

HW Set#6 Due M: Ch 25: # 4, 5, 57

Jan. 14

The electric field strength is represented on a
Field Line (FL) construction by (# FL / Area)
cutting a surface. Gauss also noted that the
net # FL exiting a CLOSED surface
was proportional to the charge inside.
Given these relations, he concluded that the
net FLUX of the field must be proportional to
the charge enclosed. It's the Law! (Gauss's Law)

Flux is defined, locally, in terms of the product of
the field component cutting across an infinitesimal
surface element times the area of that element.

Ch. 24, p. 673-685

Jan. 16

Applications of Gauss's Law; Conductors in Equilibrium

Ch. 24

Jan. 18

Potential Energy vs. Electrical Potential

Ch. 25, p. 692-709

Motion of Charged Particles in a Uniform Electric Field (p. 661-664):
Using Electrostatic Deflection
to measure the charge-to-mass ratio
of an electron

Ch 25:
HW Set#7 Read worked examples (e.g. Elby book in C005)

HW Set#8 Due F: Ch 25: 36, 38;

HW Set#9 Read worked examples on Capacitance (e.g., in Elby's book);

Jan. 21

Electric Potential

Ch. 25

Jan. 23

Electric Potential

Ch. 25

Jan. 25

Capacitance & Dielectrics

Ch. 26

Oscilloscopes

HW Set#10 Due W: Ch 26: 16, 17, 25, 29

HW Set#11 Due F: Ch 26: Q14, #49;

HW Set#12 Due M: REVIEW for Exam!;

Jan. 28

Capacitance & Dielectrics

Ch. 26, p. 722-744

Jan. 30

Capacitance & Dielectrics

Ch. 26

Feb. 1

Current & Resistance

Ch. 27, p. 752-767

Combinations of Capacitors:
Write-up for Back Bench Groups
Write-up for Front Bench Groups

HW Set#13 Due W: Ch 27: 29, 37; Ch 28: 5;

HW Set#14 Due F: Read worked examples on DC Circuits (e.g., in Elby's book);

HW Set#15 Due M: Ch 28: 17, 26, 40, 20;

Feb. 4

EXAMINATION I

Test covers Ch. 23-25

Feb. 6

Current & Resistance, and
DC Circuits

Ch. 27 & 28, p. 775-795

Feb. 8

DC Circuits

Ch. 28

Ohm's law, and
Resistance & Temperature

HW Set#16 Due W: Ch 28: # 27, 31, 32;

HW Set#17 Due F: READ Ch 29!

HW Set#18 Due M: Ch 29 # 8, 20, 36, 63;

Feb. 11

DC Circuits

Ch 28, remainder

Feb. 13

Magnetic Fields

Ch. 29, p. 808-828

Feb. 15

Magnetic Fields

Ch. 29

RC Circuits

HW Set#19 Due W: Ch 29: # 23, 61; Ch 30: # 3, 15;

HW Set#20 Due F: Ch 30: # 6, 10;

HW Set#21 Due M: Read worked examples;

Feb. 18

Sources of Magnetic Fields

Ch. 30, p. 837-855 (top)

Feb. 20

Sources of Magnetic Field

Ch. 30

Feb. 22

EXAMINATION II

Test covers Ch. 26-28

The Mass of the Electron

HW Set#22 Due W: Ch 30: 17, 25, 27, 39;

HW Set#23 Due F: Ch 30: 41, 43;

HW Set#24 Due M: Ch 31: Q10, Q12, 17, 49;

Feb. 25

Sources of Magnetic Field

Ch. 30

Feb. 27

Sources of Magnetic Field

Ch. 30

Feb. 29

Faraday's Law

Ch. 31, p. 867-886

Magnet Demos + Use of Hall Probes

HW Set#25 Due W: Ch 31: 25, 59, 66;

HW Set#26 Due F: Ch 31: 36, 43;

HW Set#27 Due M: Ch 31: 26, 16;

Mar. 3

Faraday’s Law

Ch. 31

Mar. 5

Faraday’s Law

Ch. 31

Mar. 7

Faraday’s Law

Ch. 31

The Current Balance

Ch 32: Read worked examples!

Mar. 10

Inductance

Ch. 32, p. 897-914

Mar. 12

EXAMINATION III

Test covers Ch. 29-31

Mar. 14

Inductance

Ch. 32

AC Circuits - Part I

None

Mar. 17

Spring Recess

none

Mar. 19

Be sure to go out and play a little!

none

Mar. 21

(Catch up, as needed.)

none

None

HW Set#28 Due W: Ch 33: 6, 11, 23;

HW Set#29 Due F: Ch 33: Q12, Q13, 27;

HW Set#30 Due M: Ch 33: 31, 65;
READ Ch 34!

Mar. 24

AC Circuits

Ch. 33, p. 923-944

Mar. 26

AC Circuits

Ch. 33

Mar. 28

AC Circuits

Ch. 33

AC Circuits - Part II

HW Set#31 Due W: Ch 34: 15, 16, 53;

HW Set#32 Due F: Ch 34: 28, 31, 59;

HW Set#33 Due M: Ch 35: 19, 57

Mar. 31

EM Waves

Ch. 34, p. 952-969

Apr. 2

EM Waves & The Nature of Light / Geometric Optics

Ch. 34 & 35, p. 978-996

Apr. 4

Geometric Optics

Ch. 35

Rectification & Filtering Circuits

HW Set#34 Due W: Ch 36: Q6, 27;

HW Set#35 Due F: Ch 36: 29, 47;

HW Set#36 Due M: Ch 36: 41;

Apr. 7

Geometric Optics/Image Formation

Ch. 36, p. 1008-1031 (top)

Apr. 9

EXAMINATION IV

Test covers Ch. 32-34

Apr. 11

Image Formation, and Interference of Light Waves

Ch. 36 & 37, p. 1051-1063

Single-Slit & Double-Slit Diffraction

HW Set#37 Due W: Ch 37: 9, 57;

HW Set#38 Due F: Ch 38: 8, 10;

Reading is ESSENTIAL!
Review Solutions
of Posted
Example Problems

Apr. 14

Interference of Light Waves

Ch. 37

Apr. 16

Interference & Diffraction

Ch. 37 & 38, p. 1077-1089 (top)

Apr. 18 & 21

Diffraction & Polarization

Ch. 38

 

FINAL EXAMINATION: Thursday, April 24, 3:30 PM. The first hour of that exam will cover Chapters 35-38; the second hour will review E&M basics.