8.02 Spring 2002 Lecture 31
I noticed someone had trouble finding out how to watch. To watch from this page, click on 56 KB. It's a real player file, save if you want a copy, open-as if you don't. You will need real player to open the file. It admittedly, was buggy for me, so I eventually used another source. 8.02 Electricity and Magnetism Lectures by Prof Lewin can be found at the MIT OpenCourseware site as well as on YouTube.