1. 21-1 Physics I Class 21 Thinking About Electric Fields and Electric Potential

2. 21-2 Class #19 Take-Away Concepts (Review)

3. 21-3 The Electric Field of a Point Charge (as a Source)

4. 21-4 Class #20 Take-Away Concepts (Review)

5. 21-5 Why do we solve problems like: “Where is the Net E Field = 0?”

6. 21-6 How to Solve Problems Asking “Where is Net Electric Field = 0?”

7. 21-7 How to Solve Problems Asking “Where is Net Electric Field = 0?”

8. 21-8 How to Solve Problems Asking “Where is Net Electric Field = 0?”

9. 21-9 How to Solve Problems Asking “Where is Electric Potential = 0?”

10. 21-10 How to Solve Problems Asking “Where is Electric Potential = 0?”

11. 21-11 How to Solve Problems Asking “Where is Electric Potential = 0?”

12. 21-12 Class #21 Take-Away Concepts

13. 21-13 Class #21 Problems of the Day

14. 21-14 Class #21 Problems of the Day

15. 21-15 Class #21 Problems of the Day

16. 21-16 Activity #21 Electric Fields II