3HOW TO GENERATE ELECTRICITY
Chapter 1 described why you need a closed loop to get current flowing through a circuit, and Chapter 2 showed you how to build your own electromagnet and motor. The projects in those chapters used electricity from a battery, but in this chapter, you’ll make your own electricity sources!
Specifically, you’ll learn how to build your own generator, which creates electricity from movement, and your own battery, which creates electricity through chemical reactions. These are two of the most common ways to obtain electricity.
GENERATING ELECTRICITY WITH MAGNETS
When you run current through a wire, it creates a magnetic field ...
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