Interactive lecture discusses internal resistance which provides help to students in developing an accurate model.

A brief article from The Great Idea Finder.

An electron traveling through the wires and loads of the external circuit encounters resistance. In this tutorial, the concept of resistance is introduced. For an electron, the journey from terminal to terminal is not a direct route....

[Free Registration/Login may be required to access all resource tools.] This lesson looks at what voltage is and how to solve problems involving voltage. Includes a simulation for exploring how charges work in an electric field.

What four arrangements would result in the successful lighting of a lightbulb? And more importantly, what does each of the four arrangements have in common that would lead to an understanding of the two requirements of an electric...

This lab was designed to help students understand the difference between circuits powered by DC and circuits powered by AC. Students can see that simple changes in frequency lead to changes in the potential difference across the...

This lab was designed to help students understand the difference between circuits powered by DC and circuits powered by AC. Students can see that simple changes in frequency lead to changes in the potential difference across the...

A simulation investigating a parallel-plate capacitor which is charged by connecting one plate to the positive end of a battery, and the other plate to the negative end. The battery sends electrons from one capacitor plate to the other...

Practice calculating potential difference, resistance, and current for a component from a circuit diagram.

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

At this site from the Georgia State University, the equipotential lines around several different configuration of charges are shown and described. Excellent graphics and clear discussion.

Adjust the magnetic field in this simulation to see how the flow of electricity is affected.

[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...

More than a dry series of facts about Ohm's life, this page from the University of St. Andrews provides interesting anecdotal accounts which reveal the personality behind the man. Thorough, interesting and an abundance of facts. A great...

Hydropower generation is introduced to students as a common purpose and benefit of constructing dams. Through an introduction to kinetic and potential energy, students come to understand how a dam creates electricity. They also learn the...

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