Understand the energy transformations that happens when you light a bulb with a battery. Activity requires students to build a simple circuit and take temperature and time measurements. Lab includes procedure with questions that can be...

The National Physical Laboratory, which is the UK's National Measurement Institute, offers a Beginner's Guide to Measurements in Electronics and Electrical Engineering. Discusses how electric currents are measured and offers images.

[Free Registration/Login may be required to access all resource tools.] Students are introduced to the ammeter, which measures electrical current, and to the voltmeter, which measures voltage.

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.

When electricity became available to the masses, utilities needed meters to record customer usage. This early 20th century model resembles many in use today. (Java tutorial)

You've probably heard that compact fluorescent light bulbs are more efficient than incandescent bulbs. More of the electricity they use goes into producing light, and less into producing heat than with incandescent bulbs. How much more...

Online, college-level course on electronics. Class features the practical introduction to electronics with a focus on measurement and signals. Accessible components include downloadable lecture notes, assignments, and previous quiz and...

This resource provides historic information on length measurement in the United Kingdom. Click on the topics on the left toolbar of the article to find out more information.

[Free Registration/Login may be required to access all resource tools.] Students learn about the economic importance of calculating energy consumption, and are introduced to the equations used for measuring the electricity in an electric...

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.

Read about Charles Augustin de Coulomb, who didn't invent the torsion balance, but was the first to discover it could be used to measure electrical charge- the first device capable of such a feat.

This activity will show how to properly connect wires to make a closed electric circuit. Included in this will be how to connect batteries in series and/or in parallel, and how to properly measure potential drops across a resistor and...

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...

Find out more about German physicist Wilhelm Weber, who developed and enhanced a variety of devices for sensitively detecting and measuring magnetic fields and electrical currents.

How far would you have to travel so that the light of the full sun would provide "daylight" no brighter than twilight on Earth? This project describes a method to verify the inverse square law: how light, sound, electrical signals, and...

Piezoelectric barbecue fire starters work by creating a spark that ignites the volatile lighter fluid, which then starts the charcoal burning. They are low current, high voltage devices. This project shows you a way to find out by with...

Explains electrical resistance and how it is measured using the formula for Ohm's Law.

Practice identifying the correct placement of voltmeters and ammeters to measure an unknown circuit or electric potential difference for a circuit.

Find out how measuring current in a circuit is like measuring the flow rate of water in a sprinkler system.

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

Find out how measuring voltage in a circuit is like measuring the pressure in a water pipe.

Measuring voltage drops across resistances in series-parallel circuits requires an understanding of both series and parallel circuit behavior. Learn more with this tutorial.

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

The voltage in AC circuits oscillates at a rate known as the frequency. With an oscilloscope, see and measure the length of time between signals, and calculate the frequency of an AC signal.