This brief video provides definitions for charge, current, and voltage and compares and contrasts these terms. The video also discusses coulomb, amps, and joules. 

Want a quick explanation for how resistance works as an electric current flows through a wire? Then check out this video that covers electrons, conductors, ions, and the formula for resistance. It also graphs how voltage varies...

Understand the science behind the path electricity takes to our homes. The video shows how the role of transformers is important to the efficiency of the system. 

Discover the fascinating technology that allows us to move around in our daily lives without being anchored to power cables. Learners trace the history of batteries and their ability to store charge back to the 1780s, and...

A capacitor stores energy in the form of an electric charge. See a circuit diagram explaining charges and electron flow. Equations are given for energy and a capacitor is made. Show this to your physics or beginning electronics class.

A sleepy-sounding narrator teaches about moving electrons, accompanied by video and simple computer animations. He explains what a circuit is, what voltage means, and what current and amperes are. Throughout the video, safety tips for...

Voltage in relation to electrical circuits is the topic of this clip. First potential energy is explained in terms of gravity, then the idea is conveyed to describe how the chemicals in a battery act as potential energy for an electrical...

Second in a two-part lesson on electricity, this video explores how voltage sources can be applied to create electron flow in a circuit. Though it is not modern or high-quality, it is educational. Used with part one, it can sufficiently...

First in a two-part series, this video is comprised of diagrams, pictures, and animated images explaining how an imbalance of electrons causes them to move. Stored electric charge is revealed as potential energy, and a water tower...

Get an inside look at a capacitor in this video to see how capacitors store charge. Also given is several examples of how to use the formula for capacitance to calculate charge, voltage, and capacitance. [5:42]

A demonstration that voltage is an intensive property by calculating the voltage and change in Gibbs free energy for a half reaction. [5:16]

Learn the basics of circuits with this video. Video will define current and resistance to explain how electrons flow to create electricity. [11:39]

Narrated animation that visually explains how wiring a set of batteries in series increases voltage. (30 secs) Uses Quicktime.

A video demonstration on how to make a lemon battery with a copper penny, galvanized nail coated in zinc, wires, and a lemon. Video shows how to measure the amount of voltage produced by battery using a volt meter. [6:47]

How does the voltage work when two batteries are put together? Find out in these brief video clips.

What voltage occurs when three similarly charged batteries connect? Check out the four brief video clips illustrating the process.

Gain understanding of how the charge works in a battery with the illustration of a gerbil.

What happens when multiple capacitors connect to one another? Check out this virtual lab for results.

Take a look at a virtual lab which illustrates the way a current works with different capacitors.

What happens when the voltage across a capacitor exceeds the capacitor's breakdown voltage? This animated illustration will help students make observations.

Hank discusses electrochemistry, and many of the things that go into making it possible for you to watch this episode of Crash Course Chemistry. [9:04]

So, how do those defibrillators you see on TV actually work? Surprise! Physics can explain! Okay buckle up, everyone! In this video episode of Crash Course Physics, Shini has the task of breaking down Electrical Potential Energy,...

In this video episode of Crash Course Physics, it's time to delve into the world of AC Circuits (or Alternating Currents). We've talked about how they change voltage, which helps transmit electricity over long distances, but there's so...

A video explaining how a transformer delivers voltage at a different voltage than it receives from AC power. Learn about how electromagnetic induction is the basic working principle of the transformer. Video explores the basic...