Cobler Logo
Learn

Learn how things actually work

Short, plain-language courses and how-tos from the Cobler team, explained from the ground up. Pick a course, start at part one, and work straight through.

1 course23 lessonsFree to read
What Is Electricity, Actually?23-part course

Electricity Fundamentals

23 lessonsBeginner-friendlySelf-pacedFree

A layman-friendly series on why electricity is measured, priced, and engineered the way it is: power vs energy, watts, reactive power, AC vs DC, and power factor.

  1. 1What Is Electricity, Actually?
  2. 2Volts and Amps: Electrical Pressure and Flow, Explained
  3. 3What Is an Electric Circuit? Series vs Parallel
  4. 4Power vs Energy: The Difference Between kW and kWh
  5. 5Joules vs kWh: Why Energy Has Two Names
  6. 6Why Is Power Measured in Watts? Blame the Steam Engine
+17 more lessonsStart the course

More courses on the way

In the meantime, the blog has one-off explainers and how-tos on energy and buildings.

Read the blog