q1
2m
8m
A
3m
q2
Figure 1: A particle of charge q1 = 2C sits at 2m above the origin on the
yaxis, and a particle of charge q2 = 3C sits at a point 3m below the
origin on the yaxis.
Quiz 3
You are asked to nd the electric eld at point A, which is 8m to t
PHYS 208 Test 1
Know the units for all physical properties. Be sure you know how to show your work
Chapter 18
1. Be able to distinguish the difference between the electric field and Coulombs force
Coulombs Force the force that point charges exert on eac
Chapter 21 Equations:
(21.1): The force that a mag field exerts on a moving charge:
(21.2): The motion of a charged particle in a mag field:
,
OR qV= delta EPE
(21.3): The force on a current in a mag field:
L=
in some cases
(21.4): The Torque on a curren
PHYS 208
Unit Objectives
Chapter 21
1. Be able to draw basic magnetic field lines
2. Be able to compare and contrast electric and magnetic fields
3. Know the relationship between magnetic force and moving charges.
When a charge is placed in a magnetic fie
Equations
Chapter 18:
F=k
E=k
F= qE;
q0 q1
(Coulombs Law for pt. chg)
r2
q
r2
(Elec. Field q is absol. Val)
qE=mg(a)
Q=ne (# particles)
Chapter 19:
Capacitors/Dielectrics
q= CV
C = o
A
d (Capacitance)
E=
Elec. Pot diff:
V=
EPE
q
Elec. Pot diff. created
Determine the reactance for 157.4 mH inductor when the frequency is 217.7.
Determine the reactance for a 22.4 microFarad capacitor if the frequency is 410.9.
If the impedance is 3.0 ohms and the Vrms is 8.8 V what is the Irms
If the rms voltage is 4.0 V w
1. A charged particle, passing through a certain region of space, has a velocity whose magnitude and
direction remain constant if:
A) The external magnetic eld is zero everywhere in this region
B) The external electric eld is zero everywhere in this regio
Physics 208. Fall Semester 2016.
Third Test. Ch. 242526, Cutnell and Johnson, 9th edition.
Topics: Electromagnetic Waves, Mirrors, Lenses

10 multiplechoice questions and one problem
Turn in the entire test and sign every separate page
Write CLEARLY y
Physics 208. Fall Semester 2016.
Second Test. Ch. 2122, Cutnell and Johnson, 9th edition.
Topics: Magnetic Forces, Magnetic Fields, Electromagnetic Induction

10 multiplechoice questions and one problem
Turn in the entire test and sign every separate p
Physics 208. Fall Semester 2016.
Third Test. Ch. 242526, Cutnell and Johnson, 9th edition.
Topics: Electromagnetic Waves, Mirrors, Lenses

10 multiplechoice questions and one problem
Turn in the entire test and sign every separate page
Write CLEARLY y
Physics 208. Fall Semester 2016.
Second Test. Ch. 2122, Cutnell and Johnson, 9th edition.
Topics: Magnetic Forces, Magnetic Fields, Electromagnetic Induction

10 multiplechoice questions and one problem
Turn in the entire test and sign every separate p
Physics 208. Fall Semester 2016.
Fourth Test. Ch. 3031, Cutnell and Johnson, 9th edition.
Topics: Atomic Physics, Nuclear Physics

10 multiplechoice questions and one problem
Turn in the entire test and sign every separate page
Write CLEARLY your ULID.
Eeld example
A charge of q1 = +2Q and a charge of q2 = 8Q sit on the xaxis with
q1 a distance d to the left of q2 as seen in the gure on the next page. The
question is: at what point along the axis will the electric eld due to these
charges vanish?
We b
1
q2
(3m, 4m)
q1
FIG. 1: Force between two positive point charges is directed along the dotted line between them.
Quiz from Jan.25 Sec. 001
A charge of q1 = (+2/ k )C sits at the origin. A charge of q2 = (+1/ k )C sits at a point 3m along the xaxis and
4
Test 3
PHYS 208
Chapter 24
1. Know the contributions of Maxwell.
a. Unified electricity and magnetism and developed the mathematical relationships
for electricity and magnetism and also developed a relationship for EM waves by
finding a theoretical speed