Magnetic Fields and Forces - Physics (Undergraduate Foundation)

Magnetism moves the world, from the small compass in your hand to the massive motors in factories. This course teaches you how magnetic fields work and how they push or pull moving electric charges. You will learn the Lorentz force formula, the way magnetic dipoles behave, and the specific rules for calculating magnetic strength using the Biot-Savart law and Ampere’s law. We focus on the core physics that connects electricity to magnetic forces. Knowing these laws is the first step to building or fixing electric motors, generators, and transformers. Engineers and technicians use this math to design medical imaging machines like MRI scanners and to manage power grids. If you want to work in renewable energy, robotics, or telecommunications, you must understand how currents create magnetic fields. This knowledge helps you solve real problems in electrical and mechanical systems. By the end of this study, you will be able to calculate the force on a wire carrying current and predict the path of a charge moving through a field. You will master the use of Ampere’s law to find the magnetic field around different wire shapes. You will also understand how to find the torque on a magnetic loop. These skills allow you to analyse how magnets and electricity interact in any device. This course is for first-year university students and polytechnic students studying engineering or science. It also helps secondary school leavers who want a head start before resuming at a higher institution. Even if you are just a hobbyist building simple electronics at home, these lessons provide the clear facts you need to make your projects work. It turns confusing theories into tools you can use immediately.