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Instructorls): J.R. Rudder, A. Kan/tau
PHYSICS DEPARTMENT PHY 2054 2nd Exam Fall, 2005
Name (print, last ﬁrst): On my honor, I have neither given nor received unauthorized and on this nomination. Signature: YOUR. TEST NUMBER. IS THE 6-DIGIT NUMBER AT THE TOP OF EACH PAGE. (1) Code your test number on your answer sheet (use lines 76—80 on the answer sheet for the 5-digit
number). Code your name on your answer sheet. DARKEN CIRCLES COMPLETELY. Code your UFID
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. Circle your answers on the test form. 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 Ling or M ink. Do not
make any stray marks or some answers may be counted as incorrect. (5) The answers are rounded 03. Choose the closest to exact. There is no penalty for guessing. (6) Hand in the answer sheet separately. Constants new 0
60:8.85x10'C/N/m—c=3x1m/s 1. What is the equivalent resistance of the following circuit? All
resistors have the same resistance of 10 Ohm. m7 1 =10" C pC 28 Ohm (2) 42 Ohm (3) 52 Ohm (4) 34 Ohm (5) 56 Ohm
2. What is the magnitude of the current I through the central 6 l l—mm
resistor? All resistors have the same resistance of 6 Ohm. The
battery, which has an internal resistance of 0.5!}, provides an
emf of 5 V.
I ‘U K
.67 A (2) 0.83 A (3) 2 A (4) 0.80 A (5) 0.93 A
3. Two batteries of identical e.m.f. 8 and three resistors of iden- .
tical resistance R are connected as shown. Find the potential l \
difference, Va — Vb, across the central resistor in terms of emf
8. 7—1— '
L. .( @25/3 (2) s (3) 25 (4) 5/2 (5) 3/3 , '1‘] ...
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