Physics 201- Introduction to Electricity & Magnetism
September 9- Calculating Electric Fields

Here's the recipe for quantitatively determining the electric field due to a collection of point charges:
• Sketch the electric field, not only at the location(s) you are interested in, but also at all locations (this will help you get a better intuitive sense of what is going on).
• Look at each point charge separately, finding the field due to each.  At the end we will combine the fields to find the total field.
• Find the magnitude of the electric field of your first charge at the location(s) of interest.
• Draw this vector, so you can break it into components (x-y is usually the easiest)
• Repeat these steps for each point charge.
• Sum the x components, and the y separately.  This gives you the total electric field at your location(s).

Syllabus
Schedule
Study Hints
Problem Solving
Contract
Homework- assignments & solutions
Feedback

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