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Proble
29-2
cHAprER
PHYS 40C Discussion Questions
Week 4
29 . Potential and Field
SOLUTIONS
29.3 Finding the Electric Field from the Potential
Question 1 3. The top graph shows the electric potential
as a function of x. On the axes below the graph, draw the
grap
PHYS 40C Discussion Questions
Week 10
SOLUTIONS
Post-Midterm Review
Current and Resistance
'
cHAPTER
30 30-7
30.5 Resistance and Ohm's Law
Question 1
20. A continuous metal wire connects the two ends of a 3 V battery with a
rectangular loop. The negative
Potential
PHYS 40C Discussion Questions
Week 3
SOLUTIONS
28.1 Eiectric Potential EnergY
28.2 The Potential Energy of Point
Charges
Fl
t-l
charge and a negative point charge are inside a parallei-plate l_l
capacitor. The point charges interact only with th
Induction
PHYS 40C Discussion Questions
Week 8
SOLUTIONS
33.1 lnduced Currents
33.2 Motional emf
Question 1
L
The figures below show one or more metal wires sliding on fixed metal rails in a magnetic field. For
each, determine if the induced current flows
1-a
8. This circuit has two resistors, with
R, > R2. which of the two resistors
dissipates the larger amollnt of power? Explain.
(,
i
)
Question 1
PHYS 40C Discussion Questions
dissipocfw_es Mora. povre,r.Week 6
TeR
Pn =
k,i:
"^*.ncfw_ cfw_lo.^,s
\'ro,$
c
Electric Charges and Forces
.
cHAPTER
25 25-5
PHYS 40C Discussion Questions
Week1
25.2 Gharge
25.3 lnsulators and Conductors
Question 1 10. A positively charged
electroscope has separated leaves.
a. Suppose you bring a positively charged rod close to the
H-
R
c. The frequencyaris doubled?
loov
PHYS
40CJ"g"^l"t
Discussion
is nocfw_
fro1,"rr.y.
onQuestions
IR
Week 9
r.0 A
SOLUTIONS
Circuits
Capacitor
35.2
phasor is shown
3. The current
for a l0 f) resistor.
Question 1
a. What is the instantaneous
resistor v
32-4
cHAprER
32
.
PHYS 40C Discussion Questions
Week 7
SOLUTIONS
The Magnetic Field
The wire is perpendicular
The wire is in the plane of the page. Show the magnetic field
Field: Moving Charqes
Magnetic
of
the
Source
32.3 The
page.
to the
Draw magnetic
ab
Midterm Thursday Nov 1
o One
O
page notes
t allowed
ll
d
Allowed to write on both sides
Must be in own handwriting. No xerox or tape.
o Old midterm available on web site.
o Will include ~1/4-1/3 multiple choice.
o Bring Student ID, pen/pencil, calculator,
June 6, 2005
Physics 40C Final Examination
Name
_
Student ID # _
Signature
_
This is a closed book exam, except that you may consult your one sheet of
notes (8.5x11) if you have prepared it. You may use a calculator, and you
will have three hours to work
November 1, 2012
Physics 40C Midterm Examination
This is a closed book exam, except that you may consult your single sheet of
notes (8.5x11) if you have prepared one. You may use a calculator, and
you will have an hour and twenty minutes to work the 10 qu
April 28, 2005
Physics 40C Midterm Examination
Name
_
Student ID #: _
Signature
_
This is a closed book exam, except that you may consult your single sheet of
notes (8.5x11) if you have prepared one. You may use a calculator, and
you will have an hour and
Review Exam Questions (sketched out)
1. There is a hollow metal sphere, with thickness d and inner radius b and outer radius R. The
metal sphere is electrically neutral. Inside the metal sphere is a smaller insulating sphere with
radius a, with 10 mC of c
Problem 1 (25 points not more than 20 minutes) Three positive charges,
each equal to +q , are situated at the corners of an equilateral triangle. Each
side of the triangle is of length 2d . as shown in the sketch at the right.
3) Determine the electrostat
Problem 1 (25 points) A metal
sphereofradiusa iscentetedon
leogin,andcarriesatotal =15!
charge QM. Surrounding this 52 = 3.0 m
spheleisasphecalmetalshell c=4.5m
of innermdiusbandouterradius Qqahm=-MC
c.111isshellisalsocmteredon '
QM=+2uC
the origin, and c
Short Answer (10 points each) Please show all work in your blue book.
7) A pair of charged conducting plates produces a uniform field of 12,000 N/C, directed to the
right, between the plates. The separation of the plates is 40 mm. An electron is projected
1.
Au-
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141 cfbM8 $ :0 at P\a_=\-(_. A 5 0.70
I
MC) L) 57~u& Z 7- e. C=t- c \cccgrog .
The wording of the question was somewhat confusin
\E\=J\~
were, :7-
5) The gure shows two unequal point charges, if and Q, of opposite sign. Charge Q has greater
magnitude than charge q. In which of the regions X, Y, Z will there be a point at which the net
electric field due to these two charges is zero
9)
Three capacitors are connected as shown in the figure. What is the equivalent capacitance
between points a and 11?
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4.0 is 6.0 p]:
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Caanrsc: CGPGC:+O5 10 Pa'utk or mes
pTlep't, Cmbr/IO Q-Q/ch Our5d (3.0/9. P b5h~ch
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