Science Struck
Science Struck: Amperage vs. Voltage What Is the Difference?
This article explains what voltage and amperage are and the effect batteries have on them in an electrical circuit.
Ducksters
Ducksters: Kids Science: Electricity 102
Kid's learn more about the science of electricity. How its measured and generated.
CK-12 Foundation
Ck 12: Fourth Grade Science: Physical Science: Electric 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).
Creative Science Centre
Creative Science Centre: 6 Generators
Apart from the piezo generator, all of these generators are based on the same simple design, where magnets are rotated near to coils of wire (Faraday Induction). There is no coil switching so these are AC generators. On magnet movement,...
Creative Science Centre
Creative Science Centre: An Electric Thermometer
Instructions for how to make an electrical thermometer. The electrical thermometer works like this - the design consists of four resistors each made from about 40 meters of very thin copper wire. The electrical resistance of wire changes...
Creative Science Centre
Creative Science Centre: Experiments With Homemade Batteries
Simple homemade batteries are described that can be made from items found in the home or school lab. These experiments help students understand how to wire them up, the origin of current, voltage and power, as well as the chemistry that...
CK-12 Foundation
Ck 12: Physical Science: Electric Current
[Free Registration/Login may be required to access all resource tools.] Explains what electric current and voltage are and why electric current occurs.
Science Struck
Science Struck: A Comprehensive List of All the Physics Formulas
Provides a long list of physics formulas for easy reference.
Creative Science Centre
Creative Science Centre: Two Low Power Led Flashers
Explains the design of two circuits that can flash an LED from a single 1.5V battery. A typical LED needs 2-3V to work properly and both these circuits include a voltage doubler to boost the voltage to drive the LED. Both circuits will...
Creative Science Centre
Creative Science Centre: A Simple Demonstration of Piezoelectricity
Piezoelectricity is an electrical effect that occurs when mechanical stress is applied to certain materials, e.g., quartz crystals, Rochelle salts, and barium titanate. The sound of a wrist watch alarm or a smoke detector is made by a...
Creative Science Centre
Creative Science Centre: Kelvin Water Dropper Electrostatic Ht Generator
Lord Kelvin (William Thomson) developed electrostatic theory and a range of novel and interesting electrostatic apparatuses. Described here is a reconstruction of a water dropper electrostatic generator. It's capable of generating...
Science Struck
Science Struck: Lcr Meter Working Principle and Uses
Explains what an LCR meter is and how it is used to measure the inductance, capacitance, and resistance of a circuit. Lists the different parameters of a circuit that it measures, describes two types of LCR meters, and gives definitions...
Georgia Department of Education
Ga Virtual Learning: Ap Physics 1: Electric Circuits
In this unit students discover the meaning and some applications of electric potential, commonly known as voltage, and how it powers some simple circuits.
Concord Consortium
Concord Consortium: Stem Resources: Wind Generator
Using a voltage sensor, students will measure how much "electricity" is produced by the wind turbine that they design and build. Students will experiment with blade designs to see which one collects energy from the wind the most...
Concord Consortium
Concord Consortium: Stem Resources: Electric Current
In this interactive, students can explore how current, voltage, and resistance are related in a model showing the flow of electrons in an electric circuit. They will learn about Ohm's law and how other forms of energy can be made from...
Wolfram Research
Wolfram Science World: Capacitor
A rather mathematical explanation of a capacitor. Gives all the appropriate formulae, with many hotwords for further info.
CK-12 Foundation
Ck 12: Physical Science: Electric Transformers
[Free Registration/Login may be required to access all resource tools.] Discusses how an electric transformer works and step-up and step-down transformers.
ClassFlow
Class Flow: Electricity
[Free Registration/Login Required] Students can use this Flipchart to learn and apply Ohm's law to basic circuitry problems. Students are introduced to the relationship among voltage, current, and resistance, and then apply their newly...
University of Waterloo (Canada)
Computer Assisted Chem. Tutorial/chemistry of Batteries
A superb explanation of how a battery works. Discusses the associated chemistry which explains how a battery produces a voltage. Includes a series of "Confidence Building Questions."
Khan Academy
Khan Academy: Electrical Engineering: Introduction
Some basic concepts to introduce the electrical engineering course. Become familiar with engineering numbers and notation, and learn about the two most important electrical quantities: current and voltage.
Khan Academy
Khan Academy: Electrical Engineering: Electrostatics
Electrostatics is the study of forces between charges, as described by Coulomb's Law. We develop the concept of an electric field surrounding charges. We work through examples of the electric field near a line, and near a plane, and...
Howard Hughes Medical Institute
Hhmi: Biointeractive: The Virtual Neurophysiology Lab
Investigate the nervous system by looking at nerve cells in this virtual lab. This lab exercise allows students to experience a virtual dissection of a leech to use electronic equipment to explore the electrical activity of nerve cells....
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Rc Circuit Model
An electrical circuit simulation modeling the behavior of a voltage source attached in a series to a resistor and capacitor.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Parallel Plate Capacitor
A simulation investigating a parallel-plate capacitor which is charged by connecting one plate to the positive end of a battery, and the other plate to the negative end. The battery sends electrons from one capacitor plate to the other...