Physics 201- Introduction to Electricity & Magnetism
November 1- Magnetic Forces

 

 

 

 
 

 

  Magnetic field of a bar magnet looks something like this:
 




Here's the field of the earth:

As far as we know there are no such things are magnetic charges (monopoles).  Theories do not prohibit them, we just have never seen them.

This means that, unlike electric field lines, mangetic field lines do not have ends; they form complete loops.
 
 

 

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Jeff Phillips
phillips@lmu.edu
Loyola Marymount University
Fall 2002