Think about all the things you use daily that require electricity: lights, radios, audio equipment, telephones, microwave ovens, hair dryers, furnaces, air conditioners. And what about the computer you are using right now?
Everywhere you turn, we humans are using electricity. Have you ever wondered exactly what electricity is and how it works?
Let's enter the world of Circuits and Switches. Click the Lesson 1 link to the right to start.