PHYS 2321-03   "Physics 2''  -- Fall 2020

van de Graff

Instructor: Dr. Jason Pinkney
Office hours  in SA111 at  these times: 2-4 pm on Wed, 10-1:00pm on R.
Email: or call 419-772-2740.
Instructor's Home page:
Credits: 3.00     CRN: 20771
Department: Physics and Astronomy
Class Home page:
Class time and place (Section 3):  MWF, 11:00-11:50 pm, Kennedy 103
Text: Physics for Scientists and Engineers, 9th Edition.  By Serway and Jewett.
(ISBN-10: 1-133-94727-1, ISBN-13: 978-1-133-94727-1)

magnet with key

NEW STUFF    -  Watch this spot for new links.  These may include outlines and homework solutions. 

Advice on homeworks
PhET Coulombs Law simulation
Textbook's chapter 23 PPT.

Link to Moodle page . This Moodle page will be used sparingly unless we go online.

Course Description:
This course is a calculus-based introduction to E&M (electricity and magnetism), waves, and optics. Topics include Coulomb's law (static electric forces), electric and magnetic fields, electric potentials and potential energy, Maxwell's equations, waves, sound, light, image formation, and diffraction.  Some basic electrical circuits will be discussed, but we mostly leave this to electrical engineering courses.  Here we want to emphasize the theory and concepts inherent in all electric and magnetic phenomena.  This is a challenging course in that you must continue applying what you learned in PHYS 2311 (Mechanics and Thermodynamics) and your calculus courses.
A tentative calendar of topics is outlined below.

You should have passed PHYS 2311 with a minimum Grade of D. This means you also have Calculus I under your belt.

Schedule (tentative):

Week of Topic Chapter(s) Tests
8/10,12,14 Syllabus. Electric Charge and Force 23
8/17,19,21 Electric Fields,Gauss' Law 23/24 quiz1
8/24,26,28 Gauss' Law, Electric Potential 24,25 quiz2
8/31,9/2,4 Electric Potential 25 quiz3
9/7,9,11 Capacitance 26 Exam I
9/14,16,18 Current & Resistance, DC Circuits 27,28
9/21,23,25 Magnetic Fields 29 quiz4
9/28,30,10/2 Ampere's Law 30 quiz5
10/5,7,9 Faraday's Law 31 quiz6
10/12,14,16 Faraday's Law, Induction, Maxwell's Equations 31,(32),(34) Exam II
10/19,21,23 Waves, Sound, (Superposition) 16,17,(18)
10/26,28,30 Nature of Light, Image Formation 35,36 quiz7
11/2,4,6 Image Formation 36 quiz8
11/9,11,13 Wave Optics, Diffraction 37,38
11/16 (Mon) Comprehensive Final at 4:15-6:15, Room TBA Final Exam

The lab for this class is Physics 2351. There is 1 section on Thursday at noon. Labs will meet in Meyer 122. Your performance in the lab has no direct effect on your grade in the lecture, however, you will learn the PHYS 2321 material better if you work hard in the lab. You will have an informational meeting with your instructor on the first week where you will be assigned your first lab.


Homework, attendance 25%
Quizzes (drop lowest score) 25%
Exams There will be two exams and a final. 50%


Your final letter grade is calculated roughly as follows:

<55 55-70 70-80 80-90 90-100

I will not grade any "harder" than the above. However, if the class mean drops below 75, I will grade more leniently.

Other Course Policies

Attendance will be checked by camera about once per week and more thoroughly for the first week. This is partly for contact tracing purposes. Attendance is crucial on test days or due dates. It is also important for participation in class activities and simply hearing lectures. Let me know in advance (e-mail is good) if you think you will need to miss class. If you miss a quiz or exam because of an unforeseen emergency, let me know as soon as possible, and provide proof of the emergency. The name and phone number of a relevant authority figure (perhaps a parent) can be provided as proof.

Homework will consist of reading and working problems from the textbook or the instructor.  Problem solving is a major part of physics and you need practice. Homework turned in after the time it is due will be given 50% credit. It will be scored on completeness and correctness, but not every problem will be checked. You can discuss homework with your classmates, but don't copy their work verbatim. Don't copy the solutions manual verbatim. Show your work, don't just write down the final answer. After a warning, you'll be docked points. Look for keys posted after the homework is due.

Turning in Homework You must scan your homework (with phone apps like "AdobeScan") and upload them in PDF format to a Google Drive folder for this class: PHYS2321-Physics 2 . You must create a subfolder with a name like Lastname_Firstname. Rather than returning graded pages to you, your homework will be annotated directly on Google Drive to indicate how your grade was determined.

Practice Quizzes / Self tests will  be made available online for each chapter or week of material. (See "Self Tests" below.) These are multiple choice questions linked through the class web page (not Moodle). The answers can be seen by clicking "Grade". I do not see your answers and these do not count towards your grade.

Quizzes will usually be given every week or two. I hope to give some in-class (with careful handling), and some on-line via Moodle. The Moodle quizzes will be limited in time to 10-20 minutes during a 20-30 minute window on weekends. (Those with disabilities will have customized times.) The class will be polled to find a good common time. Moodle quizzes will consist of about 10 questions, mostly multiple choice.  You can only make up a quiz (in-class or Moodle) that was missed because of a valid conflict or emergency.  Let me know as soon as possible (within 12 hours) if you miss a Moodle (or in-class) quiz. I will try to arrange an in-person make-up at my office. However, if a time cannot be arranged within 48 hrs of the test (72 hrs for Friday tests), you may have to take a 0. (For this reason, I will drop your lowest quiz score.) Students won't be able to review their quiz until make-ups are done.

Exams will be given roughly every 5 weeks (so that there are 2 plus a final). These will weigh most heavily towards your class grade. The final exam will be comprehensive, but will emphasize the last 3-5 weeks of material. One or more of the exams may be given on Moodle (to save class time). The same make-up rules used for quizzes apply (see above), but the lowest exam score is not dropped.

Disruptions  You can ask questions during class, but don't interfere with the learning of the students around you with irrelavent chatter.  Also, don't operate cell phones or laptops without my permission during lectures. Try not to arrive late or get up and walk out early (unless you are told to for being disruptive).

Calculators  I encourage you to use a calculator in this class. However, you may not use calculators to store information for tests and quizzes.  (This includes writing equations on the lid.)  Tests and quizzes don't usually require much arithmetic, so the calculator is mostly needed for homework.

Tutoring  will be available from the Physics Dept and Engineering sources.   Listen for announcements in class.   Of course, you are welcome to drop by during my office hours!

Cheating During quizzes and exams it is important that you do your own work without help from others in the class. Getting help from or providing help to others during tests is considered cheating. For homework, you can work together, but if it becomes obvious that you are copying verbatim from a manual or another person, you risk repercussions. I reserve the right to give a 0 score and report students for disciplinary action if I observe cheating. You will usually receive a warning before severe penalties. Other penalties include arbitrary point deductions and excluding the score from your average. During in-class tests, you may not obtain information from electronic devices. If online tests are given, you will be expected to work alone unless explicitly stated otherwise. You will sometimes be allowed to use notes or other aids but you are not to exchange any information with others, including someone not in your class.

Code of Academic Student Conduct from the College of A&S. The University expects its students to conduct themselves in a dignified and honorable manner as mature members of the academic community and assumes that individually and collectively they will discourage acts of academic dishonesty. The University also expects cooperation among administrators, faculty, staff, and students in preventing acts of academic dishonesty, in detecting such acts, reporting them, and identifying those who commit them, and in providing appropriate punishment for offenders. The University Code of Academic Student Conduct is found in Appendix F of the Student Handbook:

Special accomodations. Students requiring particular accommodations because of physical and/or learning disabilities should contact the Student Disability Coordinator prior to or during the first week of classes. For additional information, see: .

ONU Health & Safety. In accordance with the University’s COVID-19 safety plan and the Polar Pledge , all students will wear face coverings at all times in academic buildings. Additionally, students are to maintain a social distance of 6 feet when possible, especially when in conversation with others, during academic course meetings, and while waiting for a classroom to open. No eating or drinking will be allowed during course meetings. Students who violate this policy will be asked to leave the building immediately and must comply with this request. Additionally, students will be reported to the Office of Student Conduct for adjudication. Students who are unable to wear a face covering will need to make arrangements for accommodations with the Student Disability Coordinator prior to or during the first week of classes. ( ).

Title IX. Ohio Northern University does not discriminate or tolerate discrimination on the basis of sex, gender, transgender status, gender identity, or gender expression in its educational, extracurricular, or athletic programs, or in any admission or employment decisions. ONU is committed to promptly and equitably responding to all reports of sexual discrimination with the goal of eliminating the misconduct and/or harassment, preventing its recurrence, and addressing its effects on any individual or the community.
To report sexual misconduct (violence) or sexual harassment, students may contact the Title IX Coordinator, Liannie Parahoo, 419-227-0061, or one of the Deputy Title IX Coordinators: Brian Hofman, 419-772-1878, ; or Linda Young, (419) 772-2438, To confidentially discuss sexual misconduct (violence) or sexual harassment, students may contact University Confidential Resources: Counseling Center, (419) 772-2190; Health Center, (419) 772-2086; or Chaplain, (419) 772-2200. For more information, the University's Sexual Discrimination Policy is available at

    Here are some "Test Bank Practice" questions used for previous classes. 

Chap. 23 Test Bank Practice

Chap. 23 - a few more Practice questions

Chap. 24 Test Bank Practice.

Chap. 25 Test Bank Practice.

Chap. 26 Test Bank Practice.

Chap. 27 Test Bank Practice.

Chap. 28 Test Bank Practice.

Chap. 29 Test Bank Practice.

Chap. 30 Test Bank Practice. Typos: "m_0" stands for "mu naught" the permeability constant. "p" in no. 2 stands for pi.

Chap. 31 Test Bank Practice. Typos: ?

Chap. 16 (waves) Test Bank Practice. Typos:

Chap. 17 (sound) Test Bank Practice. Don't worry about Doppler effect questions (P. 9-10). P.7 should have T=1006N.

Chap. 35-36 (light/optics) Ignore polarization (#13-17). #9 used to give the wrong answer, it should now give A.

Chap. 37. Test Bank Practice. (Just do double slit interference)

 Cool! HYPERphysics

Pinkney's Homepage

The ONU Physics Homepage