Linear Circuits 1 - 01 - Potential, Flow, and Resistance

Day one of a linear circuits course

This lesson is the opening lecture of a traditional, sophomore-level linear circuits sequence, introducing the three concepts everything else in circuit analysis builds on: potential (voltage), flow (current), and resistance. Physical-world analogies are used throughout to make these abstract electrical quantities easier to picture.

Who it's for

Students beginning a formal circuits course, or anyone who wants a first, structured introduction to how voltage, current, and resistance relate to one another.

Key takeaways

• What potential, flow, and resistance actually represent in a circuit
• How physical analogies map onto electrical behavior
• The conceptual groundwork needed before tackling circuit analysis techniques

As a single lecture rather than a full course, it works best as a focused first step — or a refresher — before moving into more advanced circuit theory.