The journey shifts to Part 3: Magnetostatics . Here, charges are no longer still; they are in motion, creating steady currents. The traveler uses the Biot-Savart Law and Ampère’s Law to map the circular magnetic fields surrounding wires. They discover how materials like iron can bend and trap these invisible lines of force.
The magnetic equivalent of Gauss’s Law, used for symmetrical current distributions. principles of electromagnetics sadiku ppt