Why Sinusoids? [Circuit Intuitions]

Welcome to the 13th 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. I would appreciate your comments and feedback as well as requests and suggestions for future articles in this series. Please e-mail your comments to me at ali@ece.utoronto.ca.