Electromagnetism For Dummies Pdf Page

In 1820, Hans Christian Oersted was messing with a compass and a wire. He noticed that when he turned on the electricity, the compass needle moved. The Takeaway: Moving electricity creates a magnetic field.

This is how electromagnets work. If you wrap a wire around an iron nail and connect the wire to a battery, the nail becomes a magnet. Turn off the battery, it goes back to being a regular nail. Electromagnetism For Dummies Pdf

Here is where beginners get lost. A moving electric charge creates a magnetic field swirling around it. In 1820, Hans Christian Oersted was messing with

The Golden Rule: You cannot have magnetism without moving charge (except for the quantum spin in permanent magnets). Here is where beginners get lost

Go to MIT OpenCourseWare → Search "8.02 Electricity and Magnetism." Download the "Course Notes" PDF. These notes are written in plain, concise English by professors who know you are struggling. Pair this with their free video lectures, and you have a better-than-PDF experience.