Exam 3 2005 - PH 132 Exam 3 Spring 2005 Student Name...

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1 PH 132 Exam 3 Spring 2005 Student Name____________________________________________________ Student Number__________________________________________________ Lab/Recitation Section Number______________________________(11,…,35) Instructions: 1. Fill out all the information above. Write your name on each page. 2. Clearly indicate your final answers for all multiple-choice questions in the space provided. 3. Present neat and orderly solutions to each problem. Clearly indicate your method of solution by including equations used for each part. Final answers should be circled or boxed . 4. Be sure to include appropriate units with all answers. 5. Permittivity of free space: ε o 885 10 12 . C N m 2 2 . Permeability of free space: µ o A 126 10 6 Tm Multiple Choice________ Problem 1_____________ Problem 2_____________ Total _________________
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2 Multiple Choice (2 pts. each) 1) The following square, rectangular, and triangular loops of wire carry the currents I, 2I, and 3I, as shown. Assume a uniform magnetic field is directed to the right for each. Rank each loop according to the magnitude of the net torque acting on each, greatest first . 2I B I B 3I B a) b) c) l 2 l l l /2 l A) a, b, c; B) b, c, a; C) c, b, a; D) all are the same; Answer__________ 2) A wire carries a current I from point a to point b in a uniform magnetic field, as shown. The net force acting on this wire is: I R B in a b R R A) 2IRB upward; B) 2IRB downward; C) 4IRB upward; D) 4IRB downward. Answer__________
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3 3) The figure below shows the path of a proton that passes through two regions containing uniform magnetic fields of magnitudes B 1 and B 2 . Its path in each region is a semicircle.
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This note was uploaded on 09/03/2009 for the course PH 131 taught by Professor Wick during the Spring '08 term at Clarkson University .

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Exam 3 2005 - PH 132 Exam 3 Spring 2005 Student Name...

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