Electricity is flowing electrons This discussion of electricity is simplified, and relevant to the small scale electronics projects that we are building. We’ve provided some references to more thorough discussions of electricity in appendix xx. Electricity is the flow of electrons through a material. Electricity requires a closed loop to flow from beginning to end. […]

Voltage:the potential In our water system, water has a potential to fall from the upper tank, moving through the turbine to the lower tank. When the water gets to the lower tank, it has no more potential to fall (because it’s already at the lowest point in the system). If we increase the amount of […]

Current: the amount of water flowing In our water system, we can measure the amount of water that flows through the pipes. If we measure a cross section of one of the pipes at any point, we can figure out how much water passes through it in a given amount of time– for example, we […]

Resistance: restricting the flow Let’s look at how resistance might be demonstrated with the water analogy. If the pipes are wider in our water system, more water can flow through them. If the pipes are narrower, less water can flow. You could say that the amount of resistance, restriction of flow, is greater in the […]