For this electrical worksheet, 1st graders design and build a circuit model to grasp the understanding of filters in circuits pertaining to impedance and cut-off frequency. They answer a series of 31 open-ended questions that include...

In this ammeter worksheet, students answer eleven questions about ammeters, multimeters and types of circuits. They identify different types of circuits given schematic diagrams.

In this physics learning exercise, learners answer 4 short answer questions on protective relay circuits. They explain how differential relay works.

In this telegraph system instructional activity, students design a telegraph station and answer 4 questions about the voltage, the resistor values and various modifications made to their design.

In this science electricity quiz, learners answer a set of 10 questions.Page contains links to additional activities and answers.

This new version of the CCK adds capacitors, inductors and AC voltage sources to your toolbox! Now you can graph the current and voltage as a function of time. Java required.

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

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.

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

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...

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

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

What a lovely little applet! You can speed/slow it, change it from AC to DC, plot the voltage as it rotates, change direction, control other information. Real neat.

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.

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...

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...

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

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...

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...