Lecture
This lecture covers the calculation of the magnetic field generated by conductors, starting with the superposition principle for multiple conductors. It explains how to calculate the magnetic field at a point between two currents, and then delves into the more complex scenario of circuits, introducing the Biot-Savart law for calculating the magnetic field produced by current-carrying wires. The lecture simplifies the process by focusing on a circular loop, demonstrating how to determine the magnetic field at the center of the loop. By comparing this scenario to previous examples, the instructor illustrates the differences in magnetic field calculations for different geometries, preparing students for practical exercises.