CK-12 Foundation
Ck 12: Physical Science: Direct and Alternating Current
[Free Registration/Login may be required to access all resource tools.] Describes the difference between direct current and alternating current.
Khan Academy
Khan Academy: Current and Resistance
Article explores direct current circuits, alternating current circuits, and the nervous system.
Curated OER
Physics4 kids.com: Direct Current and Alternating Current
Illustration showing the difference between a direct current and an alternating current.
BBC
Bbc: Gcse Bitesize: Electric Circuits Aqa
This lesson focuses on Electrical circuits including standard symbols for electrical components, a list of components and what they do, a discussion of various types of resistors, and alternating current and direct current. Links to a...
CK-12 Foundation
Ck 12: Physics Simulation: Ac Transformer
[Free Registration/Login Required] Learn about how high-voltage alternating current (AC) electricity generated by a power station is converted into low-voltage AC electricity for your home using this interactive simulation. A PDF...
PBS
Pbs: War of the Currents
Read here about the industrial "war" that took place between the patents on alternating and direct current.
TeachEngineering
Teach Engineering: What's the Conductivity of Gatorade?
Students use conductivity meters to measure various salt and water solutions, as indicated by the number of LEDs (light emitting diodes) that illuminate on the meter. Students create calibration curves using known amounts of table salt...
Other
Tesla Memorial Society of New York: Nikola Tesla
This article provides information regarding Nikola Tesla, inventor, electrical engineer, mechanical engineer, physicist, and futurist best known for his contributions to the design of the modern alternating current electricity supply...
Robin Chew
Lucid Cafe: Nikola Tesla
Learn here about Nikola Tesla, nventor, electrical engineer, mechanical engineer, physicist, and futurist best known for his contributions to the design of the modern alternating current electricity supply system.
BBC
Bbc: Gcse Bitesize: Electric Circuits
Current transfers energy around circuits. Circuit components have various properties that can be measured and then used to make circuits for control and also circuits for testing other components.
CK-12 Foundation
Ck 12: The Electric Generator
[Free Registration/Login may be required to access all resource tools.] This lesson explains how an electric current is produced by a generator. Includes a simulation.
Other
Democracy Now
Internet counterpart of the daily news program hosted by bestselling author and journalist Amy Goodman. She tackles the stories the mainstream media is not covering. Content of the site is more liberal and progressive, but that does not...
Georgia Department of Education
Ga Virtual Learning: Physical Science: Electricity and Magnetism
Students learn about static electricity using terms such as friction, induction, and conduction. They also explain and illustrate the difference between alternating and direct current, and understand the relationship among voltage,...
PBS
Pbs: Tesla, Master of Lighting
Inventor Nikola Tesla is the subject of this extensive PBS site. In addition to information on Tesla's life and work, the site offers insight into the ways in which society and invention affect each other.
Interactive Mathematics
Interactive Mathematics: Complex Numbers
The world of complex numbers is explored through mini lessons, interactive examples, applications and demonstrations. Topics covered include definitions, basic operations, graphing, different forms of complex numbers, products,...
Other
Herb Research Foundation: Home Page
This site contains comprehensive information about herbal remedies, including current research, common uses and health benefits, guidelines and historical information.
Other
Electoral Reform Society
This British website is home to a not-for-profit group promoting alternative democratic voting systems. Students studying representative government can examine if Canada's current First-Past-the-Post system best suits Canada's changing...
Georgia State University
Georgia State University: Hyper Physics: Ac Circuits
A very comprehensive site organized well with many topics dealing with AC circuits.
Texas Instruments
Texas Instruments: Ac Circuit Analysis
This electrical engineering activity uses a TI graphing calculator to analyze AC circuits including sine waves, capacitance and inductive reactance, solving series AC circuits, and RMS calculations.
Ducksters
Ducksters: Kids Science: Electricity 102
Kid's learn more about the science of electricity. How its measured and generated.
Physics4kids
Physics 4 Kids: Electricity and Magnetism Quiz
Take this 10 question multiple choice quiz on electricity and magnetism.
Curated OER
Wikipedia: Natl Historic Landmarks in Ny: Adams Power Plant Transformer House
Transformer house of the first large-scale, alternating current electric generating plant in the world; tapped power of Niagara Falls via a 7,500 foot (2,286 m) tail-race tunnel.
Other
Islands of Hawaii
This site describes the biology, climate, history, economy, education, geography, geology, government, population, and tourism of the Hawaiian islands.
Other
Advanced Thermoelectric: Fundamental Thermoelectrics
Discusses the scientific principles (the Peltier effect) and the reliability and operation of thermoelectric modules. Includes a link to several other pages, one of which contains an animation of their operation.