2. Chapter 2 hw quiz What is the electric field at the center of a circle of radius R if the top half of the circle has a uniform charge +Q spread over the perimeter and the bottom half has a negative charge, -Q, uniformly spread over the perimeter? +Q+Q -Q-Q

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

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

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

6. For a point charge at the origin:

7. Have a great day! Please don’t forget your pictures Hw: All Chapter 3 problems and exercises Reading: Chapter 3