Looking Into Two Nodes [Circuit Intuitions]

Welcome to the 28th article in the "Circuit Intuitions" column series. As the title suggests, each article provides insights and intuitions into circuit design and analysis. These articles are aimed at undergraduate students but may serve the interests of other readers as well. If you read this article, I would appreciate your comments and feedback as well as your requests and suggestions for future articles in this series. Please email me your comments at ali@ece.utoronto.ca.