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Physics 12 Mr. Jean October 28 th, 2013

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

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

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

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

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

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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.

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2) Zero Electric Potential

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Point #1: Between the Charges

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Point #2: To the Right of the Negative Charge

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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.

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

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