o               Course homepage, Ongoing Lectures, TT-system
  • Instructor’s weekly informal sessions:

Tu 3:30-4:20, RAS 213 ; Fri 4-5, RLM 5.104

 

Lecture: 12 Review unit #1

Ch22-23: Coulomb’s law for electric force and electric field.

§         Example E due to point charges: p196

§         Charging by induction

§         Direction of E due to symmetrically arranged segments. (p197 + digression: several more examples)

Ch 24 Gauss law

§         Ingoing flux vs outgoing flux: p200

§         Concentric conducting shell and point charge: p203

o      E in region: r>c

o      E in region a<r<b

§         A different situation: conducting shell with q1 removed.

o      E in region a<r<b.

Ch 25 Potential

§         Conducting shell with q1 removed (con’d). What is V0?

§         A new case: Conducting shell with a +Q and -Q arrangement. Find V0. p214

§         Point charges at corners of triangle. p215

o      EA, VA

o      U

o      Work required to remove c to infinity.

Ch 26 Capacitance

§         One plate: E1, p204

§         ||-plate: E, V and C. p218, p206

§         Practice on series and || connections, p220.

§         To-day’s it-question.

 

 

Reminders:

  • Instructor’s informal session tomorrow. See above for time and place.
  • Wed class (2/13): Begin chapter 27. A simple question on the material covered in the class may be included in midterm 1. However, HW5 will not be included in midterm 1.
  • In view of the fact that next week is the “midterm-week”, HW5 is relatively short.

Preparation for midterm 1:

  • Course summary: It contains the basic formula you need to know.

§         We suggest that you use it as a check-list as you study each chapter.

§         Download page 1 of the course summary, if you have not done it.

§         A fresh course summary will be included in your exam package. It is important for you to get familiar with it prior to the exam.

  • Textbook: Skim through the text. Go through figures and examples (especially the ones related to your homework problems.)
  • Homework problems: Understand the physics of each problem.
  • Consult your class-notes for clarification.
  • Pay special attention to the in-class-review of the unit.  
  • Review inclass-test (it) questions.

Midterm exam:   Exam site for midterm 1 is:

  • Advice for taking an exam
  • Advice for exam preparation
  • Calculator which has the capability of storing formula (e.g. graphic calculator) is allowed only after its memory is cleared. (Please show your “memory clearance” to two classmates, when applicable).
  • For current semester, we have adopted no-negative scoring grading policy. This supersedes the negative-scoring-policy discussed the “advice for taking an exam” link.