So far in this book, our electronics have mostly evolved around LEDs. I have done this for good reason. LEDs (and resistors) are easy to use components and provide the basic building blocks for learning about concepts such as Ohm's Law, power, and Kirchhoff's voltage law. Master the basics of LED circuits and the calculations that lie behind them and you will be well on your way to undertaking more complex components and circuits.
Let's go a little deeper with our LED and explore its data properties and see the application of Ohm's Law, power, and Kirchhoff's voltage law. Through a series of examples, we will work through a process to explain why the LED circuits you've seen previously in this book are using a 200 Ohm resistor.
The following is a basic LED circuit, similar to what we have been using so far in this book. If you need a refresher on this circuit, please revisit Chapter 2, Getting...
