phy2054e2s19_f.pdf - 77777 77777 Instructor Prof Avery and...

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77777 77777 Instructor: Prof. Avery and Dr. Weatherford PHYSICS DEPARTMENT PHY 2054 Exam 2 March 19, 2019 Name (PRINT, last, first): Signature: On my honor, I have neither given nor received unauthorized aid on this examination. YOUR TEST NUMBER IS THE 5-DIGIT NUMBER AT THE TOP OF EACH PAGE. DIRECTIONS (1) Code your test number on your answer sheet (use 76–80 for the 5-digit number) . Code your name on your answer sheet. DARKEN CIRCLES COMPLETELY . Code your student number on your answer sheet. (2) Print your name on this sheet and sign it also. (3) Do all scratch work anywhere on this exam that you like. At the end of the test, this exam printout is to be turned in. No credit will be given without both answer sheet and printout with scratch work most questions demand. (4) Blacken the circle of your intended answer completely, using a #2 pencil or blue or black ink . Do not make any stray marks or the answer sheet may not read properly. (5) The answers are rounded off. Choose the closest to exact. There is no penalty for guessing. >>>>>>>> WHEN YOU FINISH <<<<<<<< Hand in the answer sheet separately. 1. What is the equivalent resistance between points A and B? (1) 1.78 Ω(2) 18.0 Ω(3) 0.56 Ω(4) 10.6 Ω(5) 0.92 Ω 2. What is the magnitude of the change in the current measured by the ammeter whenthe switchSopens? 3. Calculate the current through resistorR. 4. The circuit contains a discharged capacitor.The switch is moved to position A.After the capacitor is fully charged, the switch changes to position B. What is thevoltage across the capacitor 10 sec after the switch changes?

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