# Electric Forces and Electric Fields

Student Learning Objectives
Lessons / Lecture Notes
Important Equations
Example Problems
Applets and Animations

Student Learning Objectives

• To become familiar with basic electric phenomena.
• To learn the charge model and use it to explain basic electric phenomena.
• To understand polarization and the attraction between neutral and charged objects.
• To understand and use Coulomb’s law for point charges.
• To recognize and use the principle of superposition for electric forces.
• To begin the process of understanding the field model and the concept of a field.
• To learn the electric field of a point charge.
• To use the principle of superposition to calculate the electric field of multiple charges and of continuous distributions of charge.
• To learn the electric field of common charge distributions.
• To learn the electric field of a parallel-plate capacitor and some of its applications.
• To study the motion of charged particles and dipoles in simple electric fields.
• To calculate forces and torques on charges in electric fields.

Lessons / Lecture Notes

The Physics Classroom (conceptual)

PY106 Notes from Boston University (algebra-based):

Physics 2B notes from Dr. Bobby W.S. Lau (algebra-based)

HyperPhysics (calculus-based)

Physics 4B notes from Dr. Bobby W.S. Lau (calculus-based)

Important Equations (for algebra-based Physics)

Example Problems

Example Problems for algebra-based physics (from College Physics 2nd Edition by Knight, Jones, and Field):

Example Problems (Electric Fields and Forces)
Solutions to Example Problems (Electric Fields and Forces)

Example Problems for calculus-based physics (from Fundamentals of Physics 9th Edition by Halliday, Resnick, and Walker):

Example Problems (Electric Charge and Forces) | Example Problems (Electric Field)
Solutions to Example Problems (Electric Charge and Forces) | Solutions to Example Problems (Electric Field)

Applets and Animations