Fields: Gravity, Electricity, and Magnetism—PHYS 2113

Section 6: Tues. Thurs. 12pm-1:20pm in Nicholson 119

Office hours: Wed. 2pm-3pm, Thurs. 1:30pm-2:30pm in Nicholson 447 (please email before coming)

Course Syllabus

Textbook: Fundamentals of Physics, by Halliday, Resnick, and Walker, 10th edition (Wiley).

Homework: A homework assignment will be assigned each week using WileyPlus The course ID is 531885. (See flyer for detailed instructions.) If you previously purchased a WileyPlus access code for this edition of the textbook, it should work this semester with no additional fee. Homework will typically be due on Tuesdays at 5:00pm. WileyPlus is a very stable system, but on rare times there can be glitches. Do not procrastinate. Extensions will not be granted on homework assignments, but you can complete the assignment anytime after the due date for half credit. You are encouraged to work together with other students on homework, but the work you submit should be your own. It is most important that you understand the homework, given that it will appear on quizzes and exams. The homework will be divided into two parts: problems and multiple choice concept questions. For the problems, which require a numeric or symbolic answer, you have 12 attempts for full credit. For the concept questions, you only have one chance to answer for full credit, but you have a second chance for half credit.

Tutoring: Free physics tutoring is offered in Nicholson 102 and Middleton 141. The hours are posted here. Up to 900 minutes of free online tutoring offered here through your PAWS account. Private tutors (not free) can be found here. Academic Center for Student-Athletes, Student Learning Program and free tutoring in Tutorial Center.

Mid-term exams:
Exam I: 6:00-7:00PM WED 21 SEP 2016
Exam II: 6:00-7:00PM WED 12 OCT 2016
Exam III: 6:00-7:00PM WED 9 NOV 2016

Calculators: During your test, the only electronic device you may have with you at your seat is a scientific or graphing calculator. You may not use the calculator app on your smartphone or tablet. You may not have your cell phone, tablet, smartphone, PDA, pager, digital camera, computer, or any other device capable of taking pictures or video, sending text messages, or accessing the Internet. This means not just on your person, but also not close enough to you that you could reach it during the test. Any student found with such a device during an exam will be assumed to be violating the LSU Honor Code and will be referred to the Dean of Students for Judicial Affairs. In addition the device will be confiscated.

Final Exam: 3-5PM MON 05 DEC 2016


Midterms - 16 points each (for 48 points total)
Final Exam - 32 points
Homework - 14 points

In Class Quizzes - 6 points

Total: 100 points

Your numerical grade will be the total number of points you obtain. Given your numerical grade, your letter grade will be at least the following:

97-100 A+, 93-96.9 A, 90-92.9 A-, 85-89.9 B+, 80-84.9 B, 75-79.9 B-, 70-74.9 C+, 65-69.9 C, 60-64.9 C-, 55-59.9 D+, 50-54.9 D, 45-49.9 D-

Exam Solutions

Practice for Exams


Lecture Notes 38

  • radiation pressure
  • polarization of light

Lecture Notes 37

  • energy transport by EM waves
  • Poynting vector
  • intensity

Lecture Notes 36

  • electromagnetic waves
  • Maxwell's equations in free space

Lecture Notes 35

  • Maxwell's equations
  • spin angular momentum and orbital angular momentum
  • diamagnetism, paramagnetism, and ferromagnetism

Lecture Notes 34

  • Gauss' law for magnetic fields
  • Maxwell's law of induction

Lecture Notes 32

  • RLC circuits
  • damping
  • AC generators, resistors, inductors, and capacitors

Lecture Notes 31

  • LC circuits
  • comparison with mass on a spring
  • time-varying current and charge in an LC circuit

Lecture Notes 30

  • inductors and inductance
  • RL circuits

Lecture Notes 29

  • review of Faraday's law of induction
  • induction and energy transfer
  • changing magnetic field induces an electric field

Lecture Notes 28

  • induction (motivating experiments)
  • Faraday's law of induction

Lecture Notes 27

  • solenoids and toroids
  • current carrying coil behaves like a magnetic dipole

Lecture Notes 26

  • review of two right-hand rules
  • force between 2 parallel currents
  • Gauss' law for magnetism
  • Ampere's law

Lecture Notes 25

  • magnetic field induced by a moving charge
  • Biot-Savart law (magnetic field induced by a current carrying wire)
  • calculating the induced magnetic field by applying Biot-Savart law and principle of superposition

Lecture Notes 24

  • Lorentz force law rewritten in terms of current and length vector
  • force on a curved current carrying wire
  • torque on a current loop

Lecture Notes 23

  • Hall effect (magnetic field and current induce an electric field)
  • circulating charged particles

Lecture Notes 22

  • magnetic fields
  • bar magnets
  • Lorentz force law

Lecture Notes 21

  • equivalent circuits
  • ammeters and voltmeters
  • RC circuits and time constants

Lecture Notes 20

  • EMF devices (batteries)
  • Kirchhoff voltage / current laws
  • internal resistance of batteries and power of unideal batteries
  • resistors in series and parallel

Lecture Notes 19

  • electric power in circuits
  • review for midterm 2

Lecture Notes 18

  • resistance and resistivity
  • calculating resistance from resistivity and geometry

Lecture Notes 17

  • electric current
  • Kirchhoff current law
  • current as the flux of current density

Lecture Notes 16

  • capacitors in parallel and series
  • simplifying networks of capacitors
  • energy stored in a capacitor
  • dielectric material

Lecture Notes 15

  • capacitors and definition of capacitance
  • parallel plate capacitors
  • charging a capacitor
  • calculating capacitance for various geometries

Lecture Notes 14

  • electric potential due to a line of charge
  • electric potential due to a charged disk
  • calculating electric field from electric potential
  • potential energy of a system of charges
  • electric potential in a conductor

Lecture Notes 13

  • electric potential difference and independence of path
  • electric potential due to many charges

Lecture Notes 12

  • electric potential
  • examples with electric potential

Lecture Notes 11

  • Gauss' law and conductors
  • Gauss' law, lines of charge, sheets of charge

Lecture Notes 10

  • Gauss' law
  • examples including Gauss' law
  • deriving Gauss' law from Coulomb's law

Lecture Notes 9

  • notion of flux (analogy with air flow and windows)
  • electric flux
  • surface integral for electric flux

Lecture Notes 8

  • using calculus to calculate electric field
  • electric field due to a ring of charge
  • electric field due to a disk of charge
  • torque and potential energy of electric dipole in a uniform electric field

Lecture Notes 7

  • electric dipoles and electric dipole moment vector
  • electric field due to continuous charge distributions
  • example: calculating electric field due to a line of charge

Lecture Notes 6

  • electric field
  • electric field lines
  • dipoles

Lecture Notes 5

  • review of Coulomb's law
  • examples with Coulomb's law
  • quantization of electric charge
  • conservation of electric charge

Lecture Notes 4

  • electric charge
  • properties of electrically charged materials
  • Coulomb's law for electrostatic force
  • principle of superposition, shell theorem for electric force

Lecture Notes 3

  • escape speed
  • Kepler's three laws of planetary motion and relation to Newton's law of universal gravitation
  • satellites, orbits, and energy

Lecture Notes 2

  • gravitation inside the Earth
  • gravitational potential energy
  • gravitational potential

Lecture Notes 1

  • Introduction to course
  • Newton's law of universal gravitation
  • Principle of superposition
  • Newton's shell theorem
  • gravitation near Earth's surface
  • gravitational field


Electric Potential

Planar and Spherical Symmetry

Cylindrical and Planar Symmetry

Flux and Gauss' Law

Distributions of Charge


More of Coulomb's Law

Electric Charge and Force


Gravity and Energy


Professor Jonathan P. Dowling's PHYS 2113 Powerpoint lectures

Last modified: December 02, 2016.