Electro-Magnetic FIelds

What is Electro-Magnetism?

In the beginning, electricity and magnetism were entirely separate subjects. The one dealt with glass rods and cat’s fur, pith balls, batteries, currents, electrolysis, and lightning; the other with bar magnets, iron filings, compass needles, and the North Pole. But in 1820 Oersted noticed that an electric current could deflect a magnetic compass needle. Soon afterward, Ampère correctly postulated that all magnetic phenomena are due to electric charges in motion. Then, in 1831, Faraday discovered that a moving magnet generates an electric current. By the time Maxwell and Lorentz put the finishing touches on the theory, electricity and magnetism were inextricably intertwined. They could no longer be regarded as separate subjects, but rather as two aspects of a single subject: electromagnetism. The fundamental problem a theory of electromagnetism hopes to solve is this: I hold up a bunch of electric charges here (and maybe shake them around); what happens to some other charge, over there?

Books required

The main aim is to find complex topics with the easiest explanations and you probably won't be able to find that in one book only. Look for simple explanations in as many different books as possible. These are the books that I used to grasp the understanding of complicated topics covered throughout the syllabus. 

1. The Feynman's Lectures on Physics (Volume II)

2. A Student's Guide to Maxwell's Equations by Daniel Fleisch

3. Introduction to Electrodynamics 4th Edition by David J. Griffiths

4. Engineering Electromagnetics by William H. Hayt

5. Lost in Math by Sabine Hossenfelder

6. Electricity and Magnetism 3rd Edition by Edward M. Purcell

Notes by Saad

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PastPapers

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