1. Electric Field Lines and Electropotential Lines\Surfaces

2. Electric Field Lines  All electric charges have invisible electric field lines surrounding them.  The source of these lines is uncertain; however, they are definitely present.  The electric field lines of a positive charge radiates outward in all directions from the charge.  The electric field lines of a negative charge radiates inward from all directions.  A positive charge released in the vicinity of an electric charge would move in the direction indicated by the direction of the electric field lines.  Negative charges would move in the opposite direction as the electric filed lines.

3. Equipotential Surfaces  The red lines on this slide are electric field lines.  Equipotential Surfaces indicate positions in an electric field where the electric potential (Voltage) is constant.  These equipotential surfaces within a uniform electric field are indicated by the blue lines in the figure to the right.  The equipotential surfaces about an isolated point charge would be as shown.

4. Equipotential Surfaces for a Dipole  The equipotential surfaces for a dipole would look those appearing in the figure to the right.

5. Procedure 1: Multimeter/Probes Procedure 1: Voltage Measurement Procedure 1 – Equipotential Surfaces/Lines Procedure 5 - Electric Field Capacitor with Insulator Procedure 2 - Plotting Electric Fields Procedure 3 – Parallel Plate Capacitor Procedure 4 - Electric Field Conducting Ring I Procedure 5 - Electric Field Like Charged Dipole Procedure 1 - Plotting Equipotential Lines/Surfaces Procedure 4 - Electric Field Conducting Ring II

6. 1000 OFF 200 20 2 200m 750 200 20 2 200m 2K 200 200K 20M 20n 2n PNP Logic 200n 22 20  200 10A Hz 2000M 200m 200 10A hFE MAX/MINHOLD 1000 OFF 200 20 2000m 200m 750 200 20 2000m 200m 200  20m 200m 750 200 1400 40kHz 20M 200k 2k 200 200  20m 200m 200  2m 20m MAX/MIN

7. 1000 OFF 200 20 2000m 200m 750 200 20 2000m 200m 200  20m 200m 750 200 1400 40kHz 20M 200k 2k 200 200  20m 200m 200  2m 20m MAX/MIN This slide shows you how to remove the caps from the probes and insert them into the multimeter. When you remove them from the probes, place them in the Laboratory kit to avoid loosing the caps. Return

8. 1000 OFF 200 20 2 200m 750 200 20 2 200m 2K 200 200K 20M 20n 2n PNP Logic 200n 22 20  200 10A Hz 2000M 200m 200 10A hFE MAX/MINHOLD 1000 OFF 200 20 2000m 200m 750 200 20 2000m 200m 200  20m 200m 750 200 1400 40kHz 20M 200k 2k 200 200  20m 200m 200  2m 20m MAX/MIN Return

9. 0 2 20 18 16 14 12 10 8 6 4 220181614121086422242628 A BCED IHGF Procedure 1- Equipotential Surfaces/Lines Return

10. Procedure 1 - Plotting Equipotential Lines/Surfaces BC Return

11. Procedure 2 - Plotting Electric Fields ab c d e

12. BC Return

13. Procedure 3 – Parallel Plate Capacitor IH a b c d e Return

14. Procedure 4 - Electric Field Capacitor with Insulator a b c d e ED Return

15. Procedure 4 - Electric Field Electric Field Conducting Ring a b c d e GF Return

16. Procedure 4 - Electric Field Like Charged Dipole ABC a b c d Return

17. Procedure 4 - Electric Field Conducting Ring a b c d GF Return g f e a’ g’ f’ e’ d’ c’ b’

18. e-

19. Scale: 2 Squares = 1 cm +-