PHYSICS 220
Review I
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PHYSICS 220
Review I
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PHYSICS 220
Review II
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PHYSICS 220
Review II
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PHYSICS 220
Review III
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Electric Charge
Electrostatic Charging
Electric Charge and Electric Field
Sections 16.1 - 16.5
Electric Fields
Coulombs Law
Electric Charge
Electrostatic Charging
Electric charge
Electric charge (usually denoted by q ) is an intrinsic property of matter
E
Review
Coulombs Law and Vectors
Electric Charge and Electric Field
Sections 16.6 - 16.8
Electric Fields
Electric Fields
Review
Coulombs Law and Vectors
Electric Fields
Coulombs Law
The magnitude of the electrostatic force exerted by a point
charge q1 on a
Review
Electric Flux
Gausss Law
Electrostatic Equilibrium
Electric Charge and Electric Field
Sections 16.9 - 16.10
Gausss Law
Final Questions
Review
Electric Flux
Gausss Law
Electrostatic Equilibrium
Coulombs Law
The magnitude of the electric force exerte
Review
Electric Potential
Electric Potential
Sections 17.1 - 17.3
Electric Potential Energy and Potential Dierence
Review
Electric Potential
Question
Why is the passenger safe inside the car?
Electric Potential Energy and Potential Dierence
Review
Electri
Review
Equipotential surfaces
Electric Potential
Sections 17.4 - 17.7
Electric Potential Energy and Potential Dierence
Electric Potential (continued)
Review
Equipotential surfaces
Electric Potential (continued)
Electric potential
The potential energy per
Dielectrics
Capacitors
Electric Potential
Sections 17.8 - 17.9
Capacitors
Dielectrics
Capacitors
Dielectrics
A dielectric is an electrical insulator that, when placed in an electric eld, becomes polarized
Since a dielectric is an electrical insulator, ele
Review
Electric Current
Electric Currents
Sections 18.1 - 18.3
Electric Currents
Resistance
Review
Electric Current
Resistance
Capacitance
The capacitance C of a capacitor is dened as the ratio of the magnitude of the charge on either conductor to the
mag
Resistance and Resistivity
Electrical Power
Electric Currents
Sections 18.4 - 18.6
Electric Currents
The War of Currents
Resistance and Resistivity
Electrical Power
The War of Currents
Resistance
Resistance is dened as the ratio of the potential dierence
PHYSICS 220
Review I
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Review Sheet
All constants (such as ke ,
0,
and e) will be given.
The following equations you are expected to know for the rst review. They will not be given.
ke q1 q2
(Coulombs law)
r2
(1)
F=
(2)
F = qE
(3)
V =
U
(also, you should know that for conservat
Homework Set 10: Solutions
Due: Wednesday, April 18, 2012
Chapter 26: Questions
(4) 6 points
Does the Earth really go around the Sun? Or is it also valid to say that the Sun goes
around the Earth? Discuss in view of the rst principle of relativity (that t
PHYSICS 220
Review II
Honors pledge
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given nor received any unauthorized help.
Name:
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Date:
You have 50 minutes to complete this exam.
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PHYSICS 220
Review III
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Equation Sheet
Electricity and Circuits
ke |Q|
r2
0A
C=
d
Q
Iavg =
t
E=
E = E A = EA cos
V = ke
i
U=
2
1
2 C V
R=
A
Qi
ri
= 0 [1 + (T T0 )]
Magnetism
B = B A = BA cos
I
L = L
t
B
I
1
U = 2 LI 2
L=N
Maxwells Equations
E =
Qenc
0
B = 0
B
t
B = 0 Ienc + 0
Homework Set 1: Solutions
Due: Friday, January 27, 2012
Chapter 16: Questions
(4) 6 points
A positively charged rod is brought close to a neutral piece of paper, which it attracts.
Draw a diagram showing the separation of charge and explain why attraction
Homework Set 2: Solutions
Due: Friday, February 3, 2012
Chapter 17: Questions
(2) 6 points
If a negative charge is initially at rest in an electric eld, will it move toward a region of
higher potential or lower potential? What about a positive charge? How
Homework Set 3: Solutions
Due: Friday, February 10, 2012
Chapter 18: Questions
(6) 8 points
Can a copper wire and an aluminum wire of the same length have the same resistance?
Explain.
The resistance of a uniform wire is given by R = /A, where is the resi
Homework Set 4: Solutions
Due: Friday, February 17, 2012
Chapter 19: Questions
(1) 6 points
Explain why birds can sit on power lines safely, whereas leaning a metal ladder up against
a power line to fetch a stuck kite is extremely dangerous.
The birds are
Homework Set 5: Solutions
Due: Monday, February 27, 2012
Chapter 20: Questions
(3) 6 points
In what direction are the magnetic eld lines surrounding a straight wire carrying a current
that is moving directly away from you?
The magnetic eld lines form cloc
Homework Set 6: Solutions
Due: Monday, March 12, 2012
Chapter 21: Questions
(4) 8 points
Two loops of wire are moving in the vicinity of a very long straight wire carrying a steady
current as shown in Fig. 21-43. Find the direction of the induced current
Homework Set 7: Solutions
Due: Monday, March 19, 2012
Chapter 22: Questions
(4) 10 points
When you ip a light switch on, does the light go on immediately? Explain.
When you ip a light switch on, the electrons in the lament wire need to move to light the b
Homework Set 8: Solutions
Due: Friday, March 30, 2012
Chapter 23: Questions
(1) 6 points
What would be the appearance of the Moon if it had (a ) a rough surface; (b ) a polished
mirrorlike surface?
With a rough surface, the Moon would look just like it do
Homework Set 9: Solutions
Due: Wednesday, April 11, 2012
Chapter 24: Questions
(4) 8 points
We can hear sounds around corners, but we cannot see around corners; yet both sound and
light are waves. Explain the dierence.
The main reason that we can hear sou
Alternating Current
Circuit Examples
Electric Currents
Sections 18.7 - 18.9
Electric Currents
Alternating Current
Circuit Examples
Alternating current
The voltage produced by an ac electric generator is sinusoidal
V = Vmax sin t
If this voltage exists acr