Rebuild your ability to explain and analyse direct-current circuits. Following the All About Circuits DC textbook topic sequence, these original Mogissi Academy lessons connect physical intuition with circuit equations, measurements and engineering checks. The first four weeks progress from charge and voltage to resistor networks and Kirchhoff’s laws. Week 5 extends Kirchhoff’s current law to a node with multiple sources.
Conceptual explanations, formula interpretation and derivations where useful, step-by-step examples, original labeled diagrams, common mistakes, and independent problems with worked answers. Use the core exercises as required study; optional extensions offer extra depth within your available time.
Distinguish charge, current and potential difference; interpret current direction, circuit nodes, energy transfer and charge–time graphs.
Derive series and parallel rules; solve a mixed network; check current and power balance; estimate tolerance-related worst cases.
Use SI prefixes and dimensional checks; model voltmeters and ammeters; calculate loading error and interpret instrument accuracy.
Apply signed KCL and KVL, derive loaded and unloaded dividers, and solve a simple node-voltage equation with independent checks.
Solve a DC node with several sources, verify signed currents and power, and practice with eight problems.
The Week 4 practical checkpoint is a first-month milestone. The cumulative Month 3 checkpoint is still planned for the end of that phase and must also assess limits, introductory derivatives and the DC analysis covered by then. Later weekly labs build toward each three-month phase checkpoint; these future assessments are not yet published.
Use the weekly guide to balance calculus and DC study across 2–3 hours each weekday. Read actively, reproduce the worked solutions with the answers covered, solve the six core extension problems in each lesson, and keep an error log. On Friday, check predictions with graphs or software and review weak points. Take the linked Saturday exam and correct it using its separate solutions.
Use hand calculations and software-only labs. Meter and component examples are circuit models, not instructions to work on mains electricity. Identify nodes, units and reference directions before calculating.