Exqwzﬁ swidnowﬁ
1. A red light bulb and a blue light bulb are placed near a plane mirror as shown below. Three
students are standing at the points indicated. Who can see the reflections of both bulbs?
Blue bulb
OMB, CM
W t») a. ma
bgyinux whwc
6‘5 561‘“
Physics 202: Electricity and
Magnetism, with Modern Physics
Chapter 18 Electric Currents
Resistivity
I
L
A
2L
I
A
V0
L
I
2V0
2A
V=IR
V0/2
Length
Cross sectional area
The difference between
insulators, semiconductors,
and conductors is their
resistivities
LEG
3 m3:
bl K\£ @
'1 \
(:2 + (£5 ‘3 9
2. Find the eight and position of an object that makes a 2.0 cm high upright virtual image that
ears 8.0 cm behind a convex mirror of focal length 20 cm
The cgmdﬁfl‘o m:
- nu
’ .
w
.4.
l_
jc
.—
,L
«1.
/ l
A
J
Final exam topics and representative questions
Electric charge and ﬁeld
1. In the figure below, each conducting sphere has a positive charge of 1.00 x 10'6 C.
The insulating rods separating the spheres each have a length of 10.0 cm. What is the
total elec
Physics 202: Electricity and
Magnetism, with Modern Physics
Chapter19DCCircuits
http:/www.ljcreate.com/products/product.asp?id=202&program=197&curr=2
ResistorsinSeries
Thecurrentthatgoesthrougheachresistoristhesame.Thetotalvoltage
isthesumofthevoltageacr
Final exam topics and representative questions
Electric charge and field
1. In the figure below, each conducting sphere has a positive charge of 1.00 x 10-6 C.
The insulating rods separating the spheres each have a length of 10.0 cm. What is the
total ele
Physics 202: Electricity and
Magnetism, with Modern Physics
Introduction(Chapter16)
Lastsemester(P201)
UniversalGravitationForce
m1m2
F G 2
r
G 6.673 10 11 N m 2 kg 2
Gravitationforceisduetomass
AlwaysAttractive
ElectricCharge
ANewForceduetoElectricCharge
Form 1
Seat #
Physics P202
John Beggs / Sabine Lammers
Final Exam
May 2, 2012
2:454:45 PM
INSTRUCTIONS
1. Please indicate which form (1, 2, 3, or 4) exam you have by marking the
appropriate bubble in column P of the SPECIAL CODES box on your
answer sheet.
Soldmns/ l:er 55mm 73202
SPWC} lots
1. For the charge distribution provided below, indicate the region (A to E) along the
horizontal axis where a point exists at which the net electric field has the greatest
magnitude. N
+q- '
A.A ‘1 I)
B. B ,r. .
0.0 Har
Clicker questions
2 March, 2015
As the person walks further away from
the mirror
A. they will see more of their body.
B. they will see the same amount of their body.
C. they will see less of their body.
As the person walks further away from
the mirror
A.
Midterm exam 3 topics list
1. Geometric optics
A. Plane mirrors
B. Spherical mirrors
C. Refraction
D. Lenses
2. Wave nature of light
A. Double slit
B. Single slit diffraction
C. Thin films
D. Polarization
3. Optical instruments
A. Eyeglasses
B. Magnifying
1.
q,\ech,nr
"-d1k
Fir e,.rn
For the charge distribution provided, indicate the region (A to E) along the
horizontal axis where a point exists at which the net electric field has the
greatest magnitude.
A*\cfw_
a;
tl
F&
-.>q
Cb'
@ P- P:
i*, '-i , @ T & &)
1. Ray
model
s
2. Planar mirrors
y
Note that angles of
incidence and reflection
must be the same
To see the highest point on your body, the ray would reflect
off the top of the mirror, which is 1 m high. But this ray
must enter your eye, which is 1.5 m hi
Physics 202: Electricity and
Magnetism, with Modern Physics
Chapter 18 Electric Currents
Electric Current
Electric current is the flow of electric charge from one place to
another.
A current can flow only if there is a
continuous conducting path. This is
Physics 202: Electricity and
Magnetism, with Modern Physics
The Work and Force (from P201)
v
F
xi
xf
x
FBrake
Fbrake=6,000 lbs.
Work done by the force F is:
=
Potential Energy
Conservative force: the work done by the
force only depends on starting and
Physics 202: Electricity and
Magnetism, with Modern Physics
Example
q1=+1 nC
1 = 109
1 cm
y
12
600
13
1
1 cm
x
1 cm
q2= +2 nC
q3= -2 nC
What is the magnitude and direction of the force on the +1 nC charge?
12
1 2
109 2 109
9
= 2 = 9 10
= 1.8 104
2
0.01
Physics 202: Electricity and
Magnetism, with Modern Physics
Conductors and Insulators
Conductorsreadilyconductelectriccharge:
theyarelikealatticeofpositiveions inabignegative cloudmade
ofmanyelectrons(atoms with loose electrons)
Examples:metals
(silver,go
Clicker Questions
13 April, 2015
1) 4
Suppose there is an atom that
2) 5
contains exactly five energy levels.
3) 10
How many different transitions are
4) 20
possible? (Count only one direction!)
5) many more than 20
n=5
n=4
n=3
n=2
n=1
1) 4
Suppose there
Clicker Question #1
Light shines on a metal with a work function of 1.8 eV
and ejects electrons with KEmax of 5.44 x 10-19 J. What is
the wavelength?
A) 365 nm
B) 238 nm
C) 775 nm
D) 689 nm
Clicker Question #1
Light shines on a metal with a work function
Clicker Questions
13 April, 2015
1) 4
Suppose there is an atom that
2) 5
contains exactly five energy levels.
3) 10
How many different transitions are
4) 20
possible? (Count only one direction!)
5) many more than 20
n=5
n=4
n=3
n=2
n=1
1) 4
Suppose there
1. Ray
model
s
2. Planar mirrors
y
Note that angles of
incidence and reflection
must be the same
To see the highest point on your body, the ray would reflect
off the top of the mirror, which is 1 m high. But this ray
must enter your eye, which is 1.5 m hi
Parallel Resistors
52%
Inthecircuitbelow,whatis
39%
thecurrentthroughR1?
6%
3%
R1 = 2
1.
R2 = 5
1. 10 A
2. 5 A
10 V
3. 2 A
4. 7 A
2.
3.
4.
SeriesandParallel
The circuit below consists of
three lights, with equal resistance
R, connected in series. When the
Form 1
Seat #
Physics P202
John Beggs/ Sabine Lammers
EXAM #3
March 28, 2013
7:009:00 PM
INSTRUCTIONS
1. Please indicate with form (1, 2, 3, or 4) exam you have by marking the
appropriate bubble in column P of the SPECIAL CODES box on your answer
sheet. Y
Physics P202
Fundamental constants:
Charge (1.602 10
Mass (kg)
E0 = m0 c2 (eV)
19
C)
proton
+1
1.67 1027
0.938 109
Mathematical Formula & Units
Circumference of circle: C = 2r;
Area of circle: A = R2 ; = 3.14159;
Area of a shperical shell A = 4R2
1mm = 10
Constants and Formulas
Speed of light in vacuum
c = 3.00 108 m/s
Permittivity of free space
0 = 8.85 1012 C2/Nm2
Coulomb constant k = 1/40
k = 8.99 109 Nm2/C2
Permeability of free space
0 = 1.26 106 Tm/A
Elementary charge
e = 1.60 1019 C
Charge of electro
P202 Spring 05 Exam 01 Draft 1
Physics P202
R. Heinz/R. de Ruyter
EXAM #1
February 3, 2005
6:30—8:30 pm
INSTRUCTIONS
Your exam is form 1. Please indicate with form (1, 2. 3. or 4) exam you have by
marking the appropriate bubble in colu1m1 “P” of the SPECI
Form Number: 1
Physics P202
S. Zhang and J. Beggs
EXAM #1
February 5, 2015
7:159:15 PM
INSTRUCTIONS
1. Please indicate which form (1, 2, 3, or 4) exam you have by marking the
appropriate bubble in column P of the SPECIAL CODES box on your answer
sheet. Yo
P202 Spring 05 Exam 01
Draft 1
Physics P202
R. Heinz/R. de Ruyter
EXAM #1
February 3, 2005
6:308:30 pm
INSTRUCTIONS
Your exam is form 1. Please indicate with form (1, 2, 3, or 4) exam you have by
marking the appropriate bubble in column P of the SPECIAL C
Form Number: !
Physics P202
P.E. Sokol and S. Zhang
EXAM#l
September 13, 2012
7:00-9:00 PM
INSTRUCTIONS
1. Please indicate which form (1, 2, 3, or 4) exam you have by marking the
appropriate bubble in column "P" of the SPECIAL CODES box on your answer
she