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f05x1aan - NAME PHYS-1200 PHYSICS II QUIZ 1 SOLUTIONS PART...

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NAME PHYS-1200 PHYSICS II QUIZ 1 SEPTEMBER 28, 2005 SOLUTIONS PART A. 1. D 8. A 2. A 3. B 4. B 5. E 6. E 7. C PART B . 1. a) INCREASE . i = E / R . When the switch is closed, R 3 will be added in parallel with R 2 . The parallel combination will have a lower resistance than R 2 alone. Since that combination is in series with R 1 , the total resistance will decrease and the current will increase. b) DECREASE . When the switch is closed, the current through R 1 will increase, so the potential difference across R 1 will increase. Since the potential difference across R 1 plus R 2 must not change, it equals E , the potential difference across R 2 will decrease. 2. a) INCREASE . q = C E . When the switch is closed, C 3 will be added in parallel with C 2 . The parallel combination will have a higher capacitance than C 2 alone. Since that combination is in series with C 1 , the total capacitance will increase and the charge will increase. b)

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f05x1aan - NAME PHYS-1200 PHYSICS II QUIZ 1 SOLUTIONS PART...

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