This simple device uses a few components to rectify the alternating current (AC) from the shake-a-gen, store it in a capacitor and convert it into a steady direct current (DC). The output can be used to run a low power device. It is also...

Students have the opportunity to explore the basics of current and circuits in this online module. Some of the activities include interactive animations, informational text, practice problems, and lab experiments.

A general summary of electrical resistance including a comparison of AC and DC current.

A short summary of resistance and how it is measured. Including information on AC and DC.

What are electric motors? Discover how electric motors work, learn about AC and DC motors, and find out their many uses.

This lesson focuses on Mains Electricity and Alternating Current. Electrical supplies can be direct current (DC) or alternating current (AC). The UK mains electricity supply is about 230V at 50 Hz. It explains the difference between AC...

This site explores the various challenges Edison faced upon attempting to produce electric power. It contains a historical essay, a complete list of Edison's patents, information on the AC and DC currents, recordings produced by the...

College-level electrical engineering course highlighting electric power systems. Course introduces electric power and the conversion of electrical to mechanical energy. Course features include readings, assignments, and quizzes.

An electrical circuit simulation modeling the behavior of a voltage source attached in a series to a resistor and capacitor.

Looking for some more explanantion on a topic covered in physics class? This site contains videos that explore some physics concepts. Videos are broken down by topics. Some videos also give examples on how to solve problems.

A summation of the War of the Currents featuring Nikola Tesla and Thomas Edison against a backdrop of The Columbian Exposition and an execution.

[Free Registration/Login may be required to access all resource tools.] Describes the difference between direct current and alternating current.

[Free Registration/Login may be required to access all resource tools.] Defines electric current and relates electric current to different materials (insulators and conductors).

Circuit analysis is the process of finding all the currents and voltages in a network of connected components. We look at the basic elements used to build circuits, and find out what happens when elements are connected together into a...

Explains what alternating current and direct current are and what they are used for.

Illustrated explanation of voltage, current, and resistance and the relationship between them.