Physics 116B Final Exam Fall 2009
Solutions
1. Last name (print) _
First name (print) _
2. Write your name (last name first) in the appropriate boxes on the test form and
bubble in the letters below it.
3. Look on the inside page for your test version num
The essential 116b. What you should know: Electric Field lines: How to draw them, what do they mean? Coulomb force: How to calculate it (vectors), when is it attractive/repulsive Gausss Law: Know how to work the 3 different shapes to find the E field
MC _
11 _ 12 _
Raw Score _
Final Percentage _%
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Write your
answer at the right. (2 points each)
1) A planar electromagnetic wave is propagating in the po
1. The four wire loops shown have edge lengths of either L, 2L, or 3L. They will
!
"
move with the same speed into a region of uniform magnetic field B , directed
into the page. Rank them according to the maximum magnitude of the induced
emf, least to gre
1. An upright object is 2f in front of a convex lens of focal
length f. The image is:
A) real, upright, same size
B) real, inverted, same size
C) virtual, inverted, reduced
D) real, inverted, reduced
E) real, inverted, magnified
2. When a single-lens came
1. Two charges of 15 pC and -40 pC are inside a cube with
sides that are 0.40 m in length. What is the net electric flux in
Nm2/C through the surface of the cube?
A) -0.47
B) +1.1
C) -2.8
D) +2.8
E) -1.1
2. !(x) is the wave function for a particle moving
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Write your
answer at the right. (2 points each)
1) A photo cathode whose work function is 2.4 eV, is illuminated with white light that has a
continuous
MC _
11 _
12 _
Raw Score _
Final Percentage _%
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Write your
answer at the right. (2 points each)
Figure 21.2b
1) Two point charges, Q1 = - 2.0 C and Q2 =
Physics 116B Spring 2009 Final Exam A
Name:
You have 2 hours to complete the exam.
You may not leave the room after you start the exam.
Only calculators, pens/pencils, and your one-page formula sheet are allowed
on your desk. No additional scrap paper.
1. A student kept her 60-watt, 120-volt study lamp turned on
from 2:00 PM until 2:00 AM. How many coulombs of charge
went through it?
A) 150
B) 3,600
C) 7,200
D) 18,000
E) 21,600
2. In the diagrams, all light bulbs are identical and all emf
devices are id
1. The positive terminals of two batteries with emf's of !1 and !2,
respectively, are connected together. Here !1 > !2. The circuit
is completed by connecting the negative terminals to each
other. If each battery has an internal resistance of r, the rate
MC _
11 _
12 _
Raw Score _
Final Percentage _%
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Write your
answer at the right. (2 points each)
1) A planar electromagnetic wave is propagating in the po
MC _ Prob 9 _ Raw Total _ Percentage _%
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Figure 29.9
1) In Fig. 29.9, a bar magnet moves away from the solenoid. The induced current through the resistor
MC _
Prob 9 _
Raw Score _
Percentage _%
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Figure 29.1
1) In Fig. 29.1, a wire and a 10- resistor are used to form a circuit in the shape of a square, 20 c
Physics 116b - Exam 1b - Fall 2008
Name:
Section:
This is a 75-minute, closed book examination.
For multiple-choice questions, circle the letter of the best answer. For free-response questions, put your nal
answer in the box provided.
You must include
Physics 116B Fall 2008
Exam 4
Instructor: Helms
Wednesday
1)
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Form A
C
C
C
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C
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C
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Form B
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C
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Form B
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C
B
A
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1. Pulling the plates of an isolated charged capacitor apart:
A) increases the potential difference
B) does not affect the potential difference
C) decreases the potential difference
D) increases the capacitance
E) does not affect the capacitance
2. A smal
MC _ Raw Score _
Final Percentage _%
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Write your answer at the right. Partial credit will be given for work that is shown clearly. (2 points each)
Figure
Physics 116B Fall 2008
Exam 4
Instructor: Helms
Wednesday
1)
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Form A
C
C
C
E
C
B
B
C
A
D
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Form B
D
A
E
D
A
C
D
A
C
C
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Form B
D
A
B
A
D
B
D
C
B
A
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