Circuit Simplification: Superposition Principle

This lecture covers the superposition principle in electrical circuits, introducing the concept that the response of a system to multiple excitations is the sum of the responses to each excitation taken separately. The theorems of Thevenin and Norton are also discussed, showing how to simplify circuits to contain only one source of voltage or current. Through examples, the instructor demonstrates how to apply the superposition principle to calculate currents in complex circuits, emphasizing the importance of not altering the initial currents during calculations. The lecture concludes with a detailed step-by-step explanation of applying the superposition principle to calculate the current in a resistor using two different sources. Students are guided through the process of simplifying the circuit and obtaining the final current value.