# ECE106: Electricity and Magnetism

Electromagnetism is a branch of physics involving the study of the electromagnetic force governed by electromagnetic fields.

Why this course is important: E&M is critical to our understanding of the universe, and power our modern society. E&M is entirely behind how Motors work.

Link to course notes here.

Common Mistakes

Don’t forget your directions at the end!! Because current density / magnetic field is a vector!!

### Concepts

#### Electrostatics

Electrostatics is concerned with stationary charges.

- Electric Charge
- Electric Force
- Electric Field
- Electric Flux
- Gauss’s Law
- Permittivity
- Electric Energy Density

#### Magnetostatics

Magnetostatics is concerned with moving charges, which create steady magnetic fields.

- Magnetic Field
- Electric Potential
- Capacitor
- Electron Current
- Circuit
- Permeability
- Biot Savart Law
- Lorentz’s Force Equation
- Magnetic Flux
- Electric Susceptibility
- Current Density
- Ampere’s Law
- Magnetic Energy Density
- Electromotive Force
- Faraday’s Law (including Lenz’s Law)
- Dielectrics
- Inductance of co-axial cables
- emf
- Induced emf

**Electrostatics** and **Magnetostatics** is combined with Lorentz’s Force Equation.