Explains the concept of electric potential difference and how it is calculated.

A brief article from The Great Idea Finder.

This article explains what voltage and amperage are and the effect batteries have on them in an electrical circuit.

[Free Registration/Login may be required to access all resource tools.] For this lesson, students learn about the invention of the battery and how a battery works, and about resistance in an electrical circuit. As well, Ohm's Law is used...

This site provides a small definition of Kirchhoff's Second Law as well as illustrations & animations that show how this law works.