Welcome to Physics 322 Winter 2019

Electricity and Magnetism (E & M) Lectures Tu Th 9:00-10:20

Prof. Gerald A. Miller miller@uw.edu B484, The head TA is Bert Xue, bertx@uw.edu)

Class email phys322a_wi19@uw.edu

Office Hours Monday 1:00-2:00 pm, Friday 1:30-2:30 pm or by appointment (please email). Feel free to email with any questions.

Text book- Griffiths (G), Introduction to Electrodynamics, 4th edition. The general goal is to provide you with the mathematical tools and physics experience that will enable you to use E & M to uncover the mysteries of Nature, to solve practical problems, to do well on exams, and eventually to use during your ultimate gainful employment.

The approximate syllabus: Magnetostatics, magnetic fields in matter, electrodynamics, Maxwell's equations and conservation laws. This is material covered in Chapters 5-9.2. of Griffiths. Lectures shall begin where they left off in 321. The first lecture will be a review of the Bio-Savart law (eq 5.34 of text), and the divergence and curl of B. The aim is to become familiar with the details of magnetism using steady currents. This involves mastering the vector potential, and a variety of boundary value problems. Then the general form of current will be considered, and we will discuss how time-dependent electric fields cause magnetic fields (Faraday's law). The unification of electricity and magnetism occurs with the realization that time-dependent magnetic fields cause electric fields (Maxwell's contribution). If there is time, we will discuss electromagnetic waves, Chapt. 9.

Goals of course: Successful completion of the course should result in a student gaining a professional ability to solve a wide variety of technical problems involving partial differential equations. Gain understanding of magnetostatics, be able to obtain magnetic fields for various configurations of charges and boundary conditions. Gain an understanding of magnetic fields in magnetic materials of various kinds. Appreciate time-dependent electromagnetic phenomena. Heavy emphasis will be placed on problem solving and mathematical methods learned in previous math and physics courses will be employed. We shall also discuss some modern physics topics within the context of E & M

Course Structure

The time in class will be used mainly for lectures. From time to time we will do "Physics is Not a Spectator Sport" which means that you will be working out examples or parts of lectures yourself. It is very important that you participate.

Tutorials are an important part of this course. The tutorial website is https://phys.washington.edu/tutorials-introductory-physics

Lecture notes
  • Lecture notes for week 1 and week 2
  • Lecture notes for week 3
  • Lecture notes for Jan 29-Feb 7
  • Lecture notes for Feb 7-Feb 19
  • More Lecture notes for Feb 7-Feb 19
  • More Lecture notes for Feb 7-Feb 19
  • Lecture notes through March 7, some typos in lecture corrected
  • Lecture notes through March 13

    Readings are from Griffiths.

    Approximate Jan. 8,10 Bio-Savart, Divergence and curl of B - (Text 5.2,5,3) Magnetic vector potential (Text 5.4)

    Approximate Jan 15,17 Magnetization, Field of Magnetized Object 6.1,6.2

    Approximate Jan 22,24. The field H, Linear and non-linear magnetic materials 6.3,6.4

    Approximate Jan 29, EMF , 7.1

    Jan 31, Midterm 1

    week of 4-8 Feb 7.1,7.2

    week of 11-14 Feb. 7.3, 8.1 (assuming UW operates Tu, Th)

    week of 18-21 Feb 8.2,

    Feb. 26, Midterm 2

    Feb 28 8.3,9.1

    March 5, 7 9.1,9.2

    March 12,14 9.3,9.4

    March 20, Midterm 3 10:30-12:20

  • Equations for exam 1,2,3 that will be provided to you

    Grading:

    Homework (HW) will be assigned every week due in class on Tuesday. This is to be worked out completely. Two problems of each HW set will be graded. Late HW will not be accepted. Doing the assigned problems is probably the most important ingredient in learning the material, and your scores on these represent 20 % of the grade. You may, and should discuss the HW problems with fellow students, but the solutions must be your own. It is necessary to hand in the homework on time in class on the due date. This is because solutions will be posted soon after class. The use of Mathematica, or other electronic tools, to solve homework problems is generally encouraged, and some HW sets may require the use of such tools. If you use Mathematica or Matlab, your notebook must be provided along with the HW. There will be two midterms, each representing 20 % of the grade. The final exam represents 20 % of the grade. Tutorial work is 20% of the grade. Exams are closed book. You will be provided with an equation-sheet containing all relevant formulae. No Mathematica or electronics of any kind may be used during exams.

    Homework grading-

    If you make an honest effort on ALL of the problems in a given set, you will receive a minimum score of 2. Two of the problems will be graded in detail, for four points each. Thus each HW set counts 10 points. Solutions will be posted soon after class, so that you can check your solutions while they are fresh in your mind.

    Please make sure that you write your name and tutorial section on your first HW page. Graded HW will be returned in the tutorial sections.

  • 2018 (Prof. Gupta) midterm 1 solved.

  • 2018 (Prof. Gupta) midterm 2 solved.

  • 2018 (Prof. Gupta) midterm 3 solved.

  • 2019 midterm 1- Q1-Q3 solved.

  • 2019 midterm 1- Q4 solved.
  • Midterm 1 grade distribution
  • 2019 midterm 2 solved. Please disregard the solution to problem 2. The issue with the finite cylinder with axial polarization is that solving for H is very difficult. We focused on awarding points for the set-up and attempt.
  • 2019 midterm 3 solved.

    Scheduling issues:

    Holidays Jan. 21, Feb 18 Midterm Exams; 9am Thursday Jan., 31, 9am Tues Feb 26 , March 20, 10:30-12:20

  • HW1 due Jan 15

  • Hw1 solution

  • HW2 due Jan 22

  • Hw2 solution
  • HW3 due Feb 5
  • HW3 solution
  • HW4 due Feb 12
  • HW4 solution
  • HW4,prob 4 solution

  • HW5 due Feb 19
  • HW5 solution

  • HW6 due March 5
  • HW6 solution
  • HW7 due March 12
  • HW7 solution