1. DAY 25 Electric Fields

2. What is an Electric Field? Who cares? Slide 20-34

3. What is an Electric Field? Who cares? Slide 20-34

4. Constructing the Electric Field Slide 20-34

5. Constructing the Electric Field Slide 20-34

6. Constructing the Electric Field Slide 20-34

7. The Electric Field of a Point Charge Slide 20-35

8. The Electric Field model Slide 20-34

9. Superposition of Electric fields Slide 20-34

10. Determine the magnitude and the direction of the electric field at point A. Example Problem Slide 20-70

11. Dipole Electric Fields Slide 20-45 Field lines

12. Electric Field Lines Slide 20-50

13. Uniform Electric Fields Slide 20-45

14. Cathode ray tube Slide 20-55

15. Examples Slide 20-55 a.The CRT (cathode ray tube) needs the electrons to exit with speed 6E7 m/s. What electric field strength is necessary? b. A uniform electric field of 1.5E5 N/C is used to deflect the beam. What angle?

16. Conductors and Electric Fields Slide 20-55

17. Conductors and Electric Fields Slide 20-55 A positively charged (non-metallic) sphere is places over a metal plate with a net negative charge.

18. Conductors and Electric Fields Slide 20-55 A positively charged (non-metallic) sphere is places over a metal plate with a net negative charge.

19. Forces and Torques on Charges in Electric Fields Slide 20-56