- Comparing conductors and insulators
- Relating electric current to flowing water
- Exploring Ohm's law
- Measuring DC voltage
- Measuring direct current
- Calculating the power consumption of your circuits
- Choosing the right batteries to power your circuits
Skill Level Beginner
- Working with electronics is a ton of fun, but it can also be a bit confusing, especially when you're first learning. What is voltage, current, resistance, power? Sure, you could look up their definitions, but to really understand those concepts and how they relate to each other, that's key to working with electronics. I'm Barron Stone, and I'm an electrical engineer who likes to keep things as simple as possible. In this course, I'll demonstrate the fundamental concepts of voltage, current, resistance and power using analogies that are easy to understand.
Electricity can be a difficult concept to grasp because we can't directly see it, so I'll use analogies to relate electricity to some things we can see, like water. I like to think of electrons moving around in a circuit like water flowing through pipes, because it helps me to visualize what's going on. In addition to knowing about the math and theory behind circuits, it's important to have a practical sense of what electronic components can actually do. I'll discuss the differences between the theoretical ideal power sources that we often use when designing circuits on paper, and real-world power sources like batteries and power adapters that have real-world limitations.
I'll also show you how to use the go-to tool for debugging electronics, the multi-meter, to measure the actual voltage and current in your circuits. If you're ready to start, let's move some electrons.