1. Physics 12 Mr. Jean October 28 th, 2013

2. The plan: Video clip of the day Unbalanced Charges Law of cosine review Electric Field Potential

3. Unbalanced Charges and Fields: Let’s say that we have two positive charges with one being stronger than the other.

4. Unbalanced Charges and Fields: Let’s say that we have two negative charges with one being stronger than the other.

5. Unbalanced Charges and Fields: Let’s say that we have two charges. A weak positive charge and a stronger negative charge.

6. Unbalanced Charges and Fields: Let’s say that we have two charges a strong positive charge and a weaker negative charge.

8. Example #2: A charge of +6.8  C is 8.2 cm to the left of a charge of –5.4  C. Determine the location of any points that are collinear with the two charges and have zero electric potential difference.

9. 2) Zero Electric Potential

10. Point #1: Between the Charges

11. Point #2: To the Right of the Negative Charge

12. Where else: Positive & Negative Infinity Why? Remember field intensity decreases with distance. In general, the more distance, the less the effect/influence from a static point charge.

13. Chapter #14 Pre-test Work on the chapter #14 –Work on practice questions –Work on chapter 15 definitions sheet