pp27 - PHYSICS: A World View Thursday, 28 April 2005 Exam...

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PHYSICS: A World View Thursday, 28 April 2005 Exam Monday, May 2 nd , 12:00 – 1:25 pm Where? Review Monday, 9:00 – 10:00, 120 AJM Johnson Here (EPS 108)
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Review of Current Model More flow more glow. The current  through the battery  depends  on the  resistance of the circuit . It’s not what you add but how you add it. Current favors the path of least resistance. Branches connected directly to a battery  are independent.  
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When are elements in series? Whatever charge goes through one  element must  be the only charge that  passes through the other (no other path). Must have the same current. Need scissors to add something in series.
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When are elements in parallel? At a junction, charge must choose to flow  through one element or  the other (but  cannot flow through both). Elements are connected on both sides. Can be added without scissors.
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Practice Problem A B C E D F
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A B C E D F Compare: A and C
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A B C E D F Compare: C and D
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A B C E D F Compare: D and E
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A B C E D F Compare: E and F
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B C E D F Compare: B and D More than half of a large pizza. All of a small pizza. small pizza large pizza ????? The current
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pp27 - PHYSICS: A World View Thursday, 28 April 2005 Exam...

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