PHYS 142 _002_S08_PRACTICE_SECOND_MIDTERM_031908

PHYS 142 _002_S08_PRACTICE_SECOND_MIDTERM_031908 - Second...

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Second Midterm PRACTICE Test Physics 142 002 E. P. Day SECOND Midterm Test E208 MSC 6PM Wednesday, March 19, 2008 There are 22 multiple choice questions each worth 5 points for a total of 90 points. There is one Open question (in a separate attachment) worth 10 points. 1.( 18_5.) The internal resistances of an ideal voltmeter and an ideal ammeter are respectively ( ideal meaning the behavior of the system is not changed when using the meter): a. zero and zero. b. infinite and infinite. c. zero and infinite. d. infinite and zero. 2.(18_29) 29. Which two resistors are in parallel with each other? a. R and R 4 b. R 2 and R 3 c. R 2 and R 4 d. R and R 1 R 2 R R 4 R 3 R 1 3. (18_14) 14. Which resistor is in series with resistor R ? a. R 1 b. R 2 c. R 3 d. R 4 R 2 R R 4 R 3 R 1 4. (19_45.) In a mass spectrometer, an ion will have a smaller radius for its circular path if: a. its speed is greater. b. its mass is greater. Page 1
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Second Midterm PRACTICE Test Physics 142 002 E. P. Day SECOND Midterm Test E208 MSC 6PM Wednesday, March 19, 2008 c. its charge is greater. d. the magnetic field is weaker. 5. (18_18). Resistors of values 8.0 , 12.0 , and 24.0 are connected in series across a battery with a small internal resi Which resistor dissipates the greatest power? a. the 8.0- resistor b. the 12.0- resistor c. the 24.0- resistor d. The answer depends on the internal resistance of the battery. 6.(18_19.) Three 8.0- resistors are connected in parallel. What is their equivalent resistance? a. 0.054 b. 0.13 c. 0.38 d. 2.7 7.(18_26.) Two resistors of values 6.0 and 12.0 are connected in parallel. This combination in turn is hooked in series with a 4.0- resistor. What is the overall resistance of this combination?
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This note was uploaded on 11/03/2008 for the course PHYS 142 taught by Professor Coleman during the Spring '08 term at Emory.

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PHYS 142 _002_S08_PRACTICE_SECOND_MIDTERM_031908 - Second...

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