5 Electricity and Metering

What are voltage, current, and resistance? How are they related? And why should you care?

In this chapter, you’ll learn about voltage, current, and resistance and how they interact with each other. This will help you understand how your circuits are working and how to make adjustments to them. You’ll also learn how to use the multimeter to measure these properties. This knowledge will help you debug your circuits and also get you on your way to designing and building your own projects from scratch.

Understanding Electricity

Electricity is the flow of electrons through a material, as you can see in Figure 5-1. In the projects in this book, electrons flow through carefully arranged and specified paths—through our ...

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