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251sp10sampletest2

251sp10sampletest2 - Phys 251 Test 2 Fall 2009 Please print...

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Phys 251 Test 2 Fall 2009 Please print your name___________________________________________ This test contains four problems. You may choose to solve any three. Please indicate which three problems you would like us to grade. Question 1 /5 Question 2 /5 Problem __ /30 Problem __ /30 Problem __ /30 Total /100 Total, including extra credit
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each question. Question 1: A power line carries current to the West. An electron 10 cm below the wire is traveling straight down. What is the direction of the force on the electron? a) To the East b) To the West c) To the North d) To the South e) Straight up f) Straight down g) Zero Q2 A wire of length L and diameter D carries current I. A second wire of the same material has length 2L diameter 2D, and carries current 2I. How does the power dissipated in the second wire compare to the power dissipated in the first wire? b) It is the same
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251sp10sampletest2 - Phys 251 Test 2 Fall 2009 Please print...

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