This tutorial illustrates how the flow of water through a system of pipes can be used to understand the flow of current through an electric circuit.

There are certain formulas in physics that are so powerful and so pervasive that they reach the state of popular knowledge. The predominant equation which pervades the study of electric circuits is often referred to as the Ohm's law...

A useful list of electrical symbols that are used in schematic diagrams. Each symbol is accompanied by its name and a caption stating its function.

The core of this lesson is simple circuits and the differences between parallel and series circuit design. Students perform experiments to test the differences between the two circuit designs using low voltage light bulbs.

Some history behind the function of the circuit board, with a guided activity guide for students to download.

[Free Registration/Login may be required to access all resource tools.] Using diagrams, video clips, and informational text, students learn how electrical current flows through a series circuit.

[Free Registration/Login may be required to access all resource tools.] In this module, students learn what a parallel circuit is and how it differs from a series circuit.

This article helps students understand the concepts of electricity and circuits.

A current can be induced in a conducting loop if it is exposed to a changing magnetic field. (Java tutorial)

Alternating current behaves differently, depending on what components are in a circuit.

Students investigate circuits and their components by building a basic thermostat. They learn why key parts are necessary for the circuit to function, and alter the circuit to optimize the thermostat temperature range. They also gain an...

In this electronics science fair project, students will make a simple dimmer switch and investigate the relationship between the resistance in the circuit and the amount of light produced. The Science Buddies project ideas are set up...

Review the components of a circuit and their symbols such as battery, resistor, and switch. Analyze how the power of a resistor is related to the current and electric potential difference across the resistor.

When measuring the current in parallel circuits, compare the circuit's total current with the current through just one resistor.

Measuring the voltage in a circuit is like measuring the drop in pressure across two points. Learn more with this tutorial.

This site outlines a lab dealing with Alternating Current Series Circuit. It includes graphs and formulas, and a list of questions associated with the lab.

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

In this hands-on activity, students build their own two-cell battery. They also determine which electrolyte solution is best suited for making a battery.

This tutorial illustrates how a galvanometer, an instrument that detects and measures small amounts of current in an electrical circuit, works. (Java tutorial)

This simulation shows a simple circuit consisting of an AC voltage source and, depending on the button selected, a resistor, a capacitor or a coil.

This simulation is about an oscillatory electromagnetic circuit formed by a capacitor and an inductor.

This circuit is most commonly used to determine the value of an unknown resistance to an electrical current.

Magnetic shunts are often used to adjust the amount of flux in the magnetic circuits found in most electrical motors. (Java tutorial)

Joseph Henry was an American scientist who pioneered the construction of strong, practical electromagnets and built one of the first electromagnetic motors. During his experiments with electromagnetism, Henry discovered the property of...