Module 3 — Magnetostatics#
Magnetostatics
Charges in steady motion, and the magnetic fields they make.
Lessons 27–32 · Intro to Electromagnetics · Maj Ellis · Dr. Neil Rogers
Where This Module Goes
Steady current and conductivity, then the magnetic field of steady currents: Biot-Savart, Gauss’s law for magnetism, Ampere’s law, and magnetic boundary conditions.
Chapter 6: Steady Current and Conductivity
- I can calculate the total current through a surface area given a current distribution.
- I can use Ohm's Law for electromagnetics to calculate the relationship between a current distribution and an electric field.
- I can articulate and identify what makes a material a good conductor and how conductivity relates to resistance.
Chapter 7: Magnetostatics
- I can use the Biot-Savart law to simple magnetostatic systems to find the magnetic field at an observation point.
- I can articulate the meaning of both the integral form and point form of Gauss's Law for magnetism.
- I can use Ampere's Law to calculate the magnetic field at an observation point for simple magnetostatic systems.
- I can apply the magnetic field boundary conditions to calculate magnetic fields on both sides of a material boundary.
Lessons 27-29
Current Density, Conductivity, and Resistance
Current through a surface, Ohm's law in point form, and what makes a good conductor. Objectives 6.1, 6.2, 6.3.
Lesson · L28Magnetic Fields and Gauss's Law for Magnetism
The Biot-Savart law, and why magnetic field lines always close. Objectives 7.1, 7.2.
Lesson · L29Ampere's Law
Integral and point forms of Ampere's law, and the field of a line current. Objective 7.3.
Lessons 30-32
Ampere's Law Applied
Ampere's law applied to practical current distributions. Objective 7.3.
Lesson · L31Magnetic Boundary Conditions
Magnetic materials, and the field on both sides of a boundary. Objective 7.4.
Lab · L32Magnetostatics Lab
The Module 3 lab. Packet to be posted. Objectives 7.1, 7.2, 7.3, 7.4.