2212_Test4-1 - PHYS 2212 Test 4 Spring 2011 Name(print)...

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Unformatted text preview: PHYS 2212 Test 4 Spring 2011 Name(print) Instructions Read all problems carefully before attempting to solve them. Your work must be legible, and the organization must be clear. You must show all work, including correct vector notation. Correct answers without adequate explanation will be counted wrong. Incorrect work or explanations mixed in with correct work will be counted wrong. Cross out anything you dont want us to read! Make explanations correct but brief. You do not need to write a lot of prose. Include diagrams! Show what goes into a calculation, not just the final number, e.g.: a b c d = (8 10- 3 )(5 10 6 ) (2 10- 5 )(4 10 4 ) = 5 10 4 Give standard SI units with your results. Unless specifically asked to derive a result, you may start from the formulas given on the formula sheet, including equations corresponding to the fundamental concepts. If a formula you need is not given, you must derive it. If you cannot do some portion of a problem, invent a symbol for the quantity you cant calculate (explain that you are doing this), and use it to do the rest of the problem. Honor Pledge In accordance with the Georgia Tech Honor Code, I have neither given nor received unauthorized aid on this test. Sign your name on the line above The final exam will be held during exam period seven Wednesday May 4th from 8:00 to 10:50am Locations TBD. The conflict final exam will be held during exam period ten Thursday May 5th from 8:00 to 10:50am in Howey N208. PHYS 2212 Do not write on this page! Problem Score Grader Problem 1 (25 pts) Problem 2 (25 pts) Problem 3 (25 pts) Problem 4 (25 pts) Problem 1 (25 Points) A bar made out of a conducting ma- terial is 0.21 m high with a rectangu- lar cross section 0.05 m wide and 0.004 m deep. The bar is part of a circuit and carries a steady current (the dia- gram shows only part of the circuit). A uniform magnetic field of 0.95 tesla is applied perpendicular to the bar, going into the page (using some coils that are not shown). Two voltmeters are connected along and across the bar and read steady voltages as shown (mV = 10- 3 volt). The connections across the bar were carefully placed directly across from each other to eliminate false readings corresponding to the much larger voltage along the bar. There is only one kind of mobile charge in this material....
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2212_Test4-1 - PHYS 2212 Test 4 Spring 2011 Name(print)...

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