Study Guide

Electricity and Magnetism Topics

Charge

The building block of all theories of electricity is charge. Charge is a fundamental property of...

Electric Fields

Every charged particle interacts with other charged particles via its electric field. An electric...

Electric Potential

If electric fields can create forces and move charges around, they must be able to change charged...

Basic Circuit Elements

All this talk about charged particles and equipotential lines is fine, but when it comes to...

Solving Circuit Questions

Using Ohm's Law, we can solve the world's simplest circuit.What in the name of Karl Friedrich...

Magnetic Fields

No discussion of electromagnetism would be complete without, well, magnetism. Magnetism is the...

Magnetic Forces

Of course, fields are great and all—but it's a field's ability to do work that makes them...

Electromagnetic Induction

Electromagnetic induction is one of the fundamental building blocks of today's world—it's...

Advanced Circuit Elements

Real circuits use more than just resistors to manipulate charge. There's a whole armory of...

Common Mistakes

There are two directions at work in Coulomb forces. One is the sign that results from Coulomb's...

Test Your Knowledge

1. What force does a 1 mC charged particle feel when placed 1 m away from a 2 mC charged...