1. Electricity and Magnetism
Physics 208
Dr. Tatiana Erukhimova
Lecture 7

2. Example 5: Electric field on ring’s axis

3. Example 6: Electric field on disk’s axisz

4. P218 Review: Conservative forces
One-dimensional problem:

5. Two-dimensional problem:
does NOT depend on path!
around the closed path is zero!

6. Chapter 3. Electric Potential
Constant electric field
The Electric Potential: V
- Single Charge
- Dipole
- conservative? potential energy function?

7. For a point charge at the origin:

8. Have a great day! Hw: All Chapter 3 problems and exercises
Reading: Chapter 3