Electricity & Electronics Project Ideas

This is a straightforward project that shows you how data can be digitized and stored on magnetic recording media. You'll learn how alpha-numeric characters are digitized, and you'll use bar magnets to represent the individual data "bits." You'll also learn about how much information can be stored in a small space (recording density), and how magnetic data can be erased.   Read more...

Here's a project that shows you how to build your own radio receiver! You'll learn the basic circuit elements required for receiving radio signals, and you'll be able to listen to AM radio broadcasts with something you made yourself. A nice feature of this project is that you can make it as easy or as advanced as you want.   Read more...

Electric charges in motion create magnetic fields. You can create an electromagnet with a simple coil of wire and a battery. This project has ideas for exploring how the strength of the electromagnet depends on the size of the coil or the voltage supplied to it.   Read more...

Did you know that you probably used an electric motor today? Yes, that's right. If you put on clothes that were washed in a washing machine, rode in a car, ate food from a fridge, warmed up lunch in a microwave, or played a video game, you used an electric motor! Try this science fair project and you'll learn how to make a simple electric motor by having two magnets "talk" to each other. As they interact, they will alternate between "liking" each other (being pulled together), and "disliking" each other (pushing away from one another). All that pushing and pulling will create some serious spinning, and you will have built an electric motor!   Read more...

You probably know that you can use iron filings to reveal the magnetic field produced by a strong magnet. If you sandwich the iron filings between pieces of waxed paper, you can make a permanent...   Read more...

Maybe somewhere in your home there's a long hallway or a stairway with a light that you can turn on from either end. It's a nice convenience, but did you ever wonder how it's wired up to work that...   Read more...

Everyone is familiar with the idea that electric current passing through devices can heat them up. Most of us have used appliances like electric stoves, hair dryers, and toasters that are made specifically for heating. We've also noticed that things that run on electricity get warm when the current is turned on. Have you ever turned this relationship around and wondered if it is possible to use heat to produce current? Did you ever wonder if it is possible to cool things using electrical current? If so, then look no further! Check out this project to learn about thermoelectricity.   Read more...

Did you know that firefighters never spray water on an electrical fire? That's because ordinary tap water conducts electricity. This project will show you how to measure the conductance of water, and how to relate your measurements to water quality.   Read more...

Wouldn't it be nice to avoid those nasty electric shocks you get after you've walked around on carpet and then shake a friend's hand, or all those crazy flyaways you get after brushing your hair? These are caused by static electricity. In this science fair project, you will build a super-sensitive charge detector to investigate the positive and negative electric fields created by static electricity. The detector can sense invisible electric fields, so try this science fair project to avoid the shock of shocks!   Read more...

Have you ever gotten a shock touching a doorknob after walking across a carpet? Static charge is responsible for that shock. Wouldn't it be cool to save up and store all of that charge in a homemade jar? It would almost be like storing lightning. This science project will show you how to do that.   Read more...

 

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