# PHYS 381 Electromagnetism I

Instructor:  Dr. Hanna     channa@boisestate.edu     (208) 426-3775     MP-425
Office Hours:  MW 4:00-5:00pm

URL:  https://www.boisestate.edu/physics/regular-faculty/hanna/phys-381/
Classroom:  MP-301       Time:  MWF 10:40-11:30am
Prerequisites:  MATH 275, MATH 333, PHYS 212

Required preparation: thorough understanding and ability to use vector calculus, including
gradient, divergence, curl, and laplacian in cartesian, cylindrical, and spherical coordinates;
mastery of all electrostatics and magnetostatics concepts and techniques from PHYS 212

Text: Introduction to Electrodynamics, by David J. Griffiths, 3rd edition
• Corrections to the first printing (fixed in the second printing, summer 1999)
• Corrections to the second printing, January 22, 2000
• Corrections to the third printing, August 4, 2000
• Corrections to the fifth printing, June 26, 2001
• Corrections to the tenth printing, September 1, 2004
• Corrections to the eighteenth printing, August 20, 2009

Vectors & Derivatives;  Calculus;  Curvilinear Coordinates reading:  1.1-1.2.5 (1-20);  1.2.6-1.3 (19-38);  1.4 (38-44)

Part 1:    Vector Analysis and Electrostatics
(Exam 1 over Chapters 1 and 2 on Wed Sep 29)

H1 due 8/30:   1.13, 1.16, 1.18, 1.25, 1.28, 1.32, 1.33, 1.39, 1.42

(Fri Sep 3 is last day to dropwithout a W.)

Dirac Delta Function & Vector Fields;  Electric Field & Field Lines;  Gauss’s Law
reading:  1.5-1.6 (45-54);  2.1, 2.2.1-2.2.2 (58-70);  2.2.3 (70-74)
H2 due 9/8:   1.44, 1.47, 2.4, 2.5, 2.6, 2.103.9/6(Holiday);  Electric Potential & Poisson’s Eq.;  Electrostatic Boundary Conditions
reading:  (No Class);  2.2.4-2.3.3 (76-83);  2.3.4-2.3.5 (83-90)
H3 due 9/13:   2.13, 2.15, 2.16, 2.21, 2.23, 2.244.9/13Electrostatic Energy;  Conductors;  Capacitors
reading:  2.4.1-2.4.2 (90-93);  2.4.3-2.5.2 (93-101);  2.5.3-2.5.4 (102-106)
H4 due 9/20: 2.27, 2.28, 2.31, 2.32, 2.33, 2.345.9/20Review;  Laplace’s Equation;  Uniqueness Theorems
reading:  Chaps. 1-2 (1-109);  3.1.1-3.1.4 (110-114);  3.1.5-3.1.6 (116-121)
H5 due 9/27:  2.35, 2.37, 2.39, 2.40, 2.46, 3.16.9/27

(Fri Oct 1 is last day to drop with a W.)

Method of Images;  EXAM 1 (Wed Sep 29);  Conducting Sphere
reading:  3.2.1-3.2.3 (121-124);  (Exam 1);  3.2.4 (124-125)
H6 due 10/4:  3.6, 3.7, 3.8, 3.10 Part 2:    Special Techniques and Dielectrics
(Exam 2 over Chapters 3 and 4 on Wed Nov 3)7.10/4Laplace’s Eq. I (Ex. 3.3);  Laplace’s Eq. II (Ex. 3.4-3.5);  Laplace’s Eq. III (Ex. 3.6-3.7)
reading:  3.3.1a (127-132);  3.3.1b (132-136);  3.3.2a (137-141)
H7 due 10/11:  3.12 3.13, 3.15, 3.18, 3.198.10/11Laplace’s Eq. IV (Ex. 3.8-3.9);  Multipole Expansion;  Electric Dipole
reading:  3.3.2b (141-144);  3.4.1-3.4.2 (146-150);  3.4.3-3.4.4 (151-154)
H8 due 10/18:  3.22, 3.26, 3.27, 3.32, 3.419.10/18Polarization;  Bound Charges;  Dielectrics
reading:  4.1 (160-166);  4.2 (166-175);  4.3-4.4.1 (175-184)
H9 due 10/25: 4.4, 4.10, 4.11, 4.15, 4.17, 4.1810.10/25Dielectric Boundaries;  Energy and Force for Dielectrics;  Review
reading:  4.4.2 (186-190);  4.4.3-4.4.4 (191-196);  Chaps. 3-4 (110-201)
H10 due 11/1:  4.20, 4.25, 4.26, 4.27, 4.2811.11/1Magnetic Fields and Forces;  EXAM 2 (Wed Nov 3);  Currents
reading:  5.1.1-5.1.2 (202-207);  (Exam 2);  5.1.3 (208-214)
H11 due 11/8:  5.1, 5.4, 5.5, 5.6 Part 3:    Magnetostatics and Magnetism in Matter
(Exam 3 over Chapters 5 and 6 on Wed Dec 15)

12.11/8Biot-Savart Law;  Div & Curl of Magnetic Field;  Ampere’s Law
reading:  5.2 (215-219);  5.3.1-5.3.3a (221-226);  5.3.3b (226-229)
H12 due 11/15:  5.9, 5.10, 5.11, 5.13, 5.1413.11/15Solenoids and Toroids;  Magnetic Vector Potential;  Magnetic BCs and Dipole Moment
reading:    5.3.3c-5.3.4 (229-233);  5.4.1-5.4.2 (234-238);  5.4.2-5.4.3 (240-246)
H13 due 11/29:  5.24, 5.25, 5.26, 5.35, 5.36 11/22

THANKSGIVING (11/22–11/26)

14.11/29Magnetization;  Bound Currents;  Auxiliary Field
reading:  6.1 (255-263);  6.2 (263-268);  6.3 (269-274)
H14 due 12/6:  6.1, 6.7, 6.8, 6.9, 6.1215.12/6Magnetic Susceptibility;  Ferromagnetism;  Review
reading:  6.4.1 (274-277); 6.4.2 (278-281);  Chaps. 5-6 (202-284)
H15 due 12/13:  6.14, 6.16, 6.17, 6.2516.12/13 EXAM 3 (Wed Dec 15, 10:30am-12:30pm, MP-301)

GOALS: To obtain a basic understanding of the key concepts of electrostatics and magnetostatics based on the static limit of Maxwell’s Equations, using the formalism of vector calculus throughout, and to prepare students for undergraduate electrodynamics (PHYS 382) and graduate-level electrostatics and magnetostatics.  The course objectives will be accomplished through lecture and discussion of selected topics in class, and by students working through the assigned parts of text, including all textbook examples and all assigned homework problems. Assessment will come from exams and assigned homework.

SYLLABUS: The syllabus describes the intended progression of the course. The syllabus and homework assignments will be revised as needed. Changes to the syllabus and the homework assignments will be posted on the course web page,https://www.boisestate.edu/physics/regular-faculty/hanna/phys-381/, which should be checked frequently for updates.