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By the end you can read a circuit diagram, predict what a change will do before you build it, and explain why a series branch and a parallel branch behave differently.
You have met current, voltage and resistance as words, and you want them to become something you can actually reason with.
Checking your progress…
Intuition comes first. You cannot reason about a symbol you have never seen behave, so this step is about changing one thing and watching what happens — before any formula appears.
Open this step →The most common beginner mistake is a topology mistake, not an arithmetic one — the path simply does not close. Fixing that by hand here means every later calculation is about a circuit that actually works.
Open this step →A circuit is an energy path. Once you can classify forms of energy and their transfers, 'the resistor gets warm' stops being a surprise and becomes the obvious consequence.
Open this step →Your first transfer: the same laws, applied to a system rather than a single loop. This is where the ideas stop being about one diagram.
Open this step →The end. A grid puts the same physics under supply, demand and failure at the scale a working engineer meets it, and asks you to make choices rather than solve for a number.
Open this step →You finish holding a working mental model of a circuit — one you can use on a diagram you have never seen, and defend when someone disagrees with you.
Once you have started this course it stays available to you, with your progress intact, even if it is later replaced.