Magnetic Fields & Forces – Moving Charges & Currents Explained | Chapter 27 of University Physics
Magnetic Fields & Forces – Moving Charges & Currents Explained | Chapter 27 of University Physics Chapter 27 dives into how moving charges and currents generate and respond to magnetic fields. From the fundamental Lorentz force to real-world applications like mass spectrometers and DC motors, you’ll build the foundation for electromagnetism. Watch the full video summary on YouTube for demonstrations of magnetic forces and device applications. Fundamentals of Magnetism Magnetic fields arise from moving electric charges. Every magnet has a north and south pole—no isolated monopoles exist. In practice, charges create the field, then other moving charges feel a force within it. The Magnetic Field (B) The magnetic field B is a vector field measured in tesla (T), with lines forming closed loops from north to south poles. Field line density indicates strength, and a compass aligns with the local field direction. Magnetic Force on a Moving Charge The Lorentz force law ...