Electrodynamics, Light, Relativity and Modern Physics
PHYS 270

Fall 2014
Physics 270
Sections 01010104
General Physics:
Electrodynamics, Light, Relativity and
Modern Physics
Syllabus
Fall 2014
Course description:
PHYSICS 270 is the third semester of a threesemester calculusbased general
physics course designed primarily for
Electrodynamics, Light, Relativity and Modern Physics
PHYS 270

Spring 2008
CHAPTER
25
Electrostatic Energy and Capacitance
1* Three point charges are on the x axis: q1 at the origin, q2 at x = 3 m, and q3 at x = 6 m. Find the electrostatic potential energy for (a) q1 = q2 = q3 = 2 C, (b) q1 = q2 = 2 C and q3 = 2 C, and
Electrodynamics, Light, Relativity and Modern Physics
PHYS 270

Spring 2008
CHAPTER Maxwell's Equations and Electromagnetic Waves
32
1* A parallelplate capacitor in air has circular plates of radius 2.3 cm separated by 1.1 mm. Charge is flowing onto the upper plate and off the lower plate at a rate of 5 A. (a) Find the t
Physics 270 Spring 2007
Professor Ouyang
Midterm Exam 1: 50mins
Practice Purpose ONLY
Name: _
Honor Pledge: I pledge on my honor that I have not given or received any unauthorized assistance on this
assignment/examination.
Honor Pledge:
Signature:
Instruc
Electrodynamics, Light, Relativity and Modern Physics
PHYS 270

Spring 2008
CHAPTER Sources of the Magnetic Field
29
1* Compare the directions of the electric and magnetic forces between two positive charges, which move along parallel paths (a) in the same direction, and (b) in opposite directions. (a) The electric forces
Physics 270 02 Sections Spring 2011 Professor Ouyang Midterm Exam 2 April 4th, 2011, 1212:50PM
Name: _ Section #: _
Solution
Honor Pledge: "I pledge on my honor that I have not given or received any unauthorized assistance on this assignment/examination.
General Physics: Electrodynamics, Light, Relativity and Modern Physics
PHYS 270

Fall 2013
HW06B
A voltage, V, is applied across a cylindrical conductor of radius r, length L, and resistance
R. As a result, a current, I, is flowing through the conductor, which gives rise to a
magnetic field, B. The conductor is placed along the yaxis, an
Physics 270 Fall 2005 Professor Fuhrer Final Exam Page 1
Name
Honor Pledge: "I pledge on my honor that I have not given or received any unauthorized assistance on this assignment/examination." Honor Pledge:
Signature: Please make sure you have nine exam p
General Physics: Electrodynamics, Light, Relativity and Modern Physics
PHYS 270

Fall 2013
PHYS270 Secs. 0101 0104
Due Oct 15, 2013 at 11:59PM
HW06B
1. Show that the rms voltage value for the sawtooth shown in the figure is
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3. (10 pts)
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2. An inductor (L = 400 mH), a capacitor (C = 4.43 F), and a resistor (R =
500 ) are
HW#5:Solutions
Solution:
Problem5.4
x
E
B dA
E ( z + z)x E ( z)x =
z
y
d
E ds =
dt
=
d
dt
BA(e
x
E ( z + z) E ( z)
E
zx =
zx =
z
z
ey ) = 0
E
=0
z
No propagation  no em wave if B is in x  direction
Problem5.5 EMwavereflectedaswellasabsorbedbythemeta
N AME:
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Physics 270 Fall 2005 Professor Fuhrer Midterm 2 Page 1
Name_
Honor Pledge: "I pledge on my honor that I have not given or received any unauthorized assistance on this assignment/examination." Honor Pledge:
Signature: Please make sure you have five exam p
m L
increasing and L increases the fringe spacing. Increasing d decreases the fringe
d
spacing. Submerging the experiment in water decreases and decreases the fringe spacing. So the answers are
(a) and (c).
22.2. Because ym =
22.4. (a) The equation for gr
Solutions for conceptual questions
34.1
The induced current will be counterclockwise (ccw).
As the bar moves upward through the constant magnetic field region, the area of the loop decreases, so the flux through the loop
decreases. By Lenzs law, any induc
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ExamIIIandIIIbGJSolutions
Thursday,November19,2009
10:15AM
NAME / Section #:
Exam III
Problem #1
Phys270
_ /
_
1. [25 pts] In the earths reference frame, a tree is at the origin and a pole is at
x=50km. Lightning strikes both the tree and the pole at t=5
Name:_
Physics 270
D. Papadopoulos
1st Midtern
Spring 2009
March 2, 2009
Problem 1 (15)
A wire of the shape shown in the figure carries a current I. What is the magnetic field
including direction of the semicircle arising from
(a)
each straight segment of
General Physics: Vibration, Waves, Heat, Electricity and Magnetism
PHYS 270

Spring 2017
Potentially Useful Things
B
:
for any vectors A,
7
0 = 4 10
I
T m/A
~ d~s = 0 Ithru
B
Z
Z
B
I
0 I
2r
N=
I(t) =
Bloop =
dB
dt
1
C
p
R 2 + (XL XC )2
I0
Irms =
2
2
PR = Irms
R =
1
LC
VC0 = I0 XC
AC, cap only : IC (t) = I0 cos t +
2
Z=
Bsol =
E0 = I0 Z
E0
E
General Physics: Vibration, Waves, Heat, Electricity and Magnetism
PHYS 270

Spring 2017
Potentially Useful Things
~ B
~ :
for any vectors A,
0 = 4 107 T m/A
= 2f
k=
I = Savg =
0 = 8.85 1012 C2 /N m2
2
c = f =
prad =
c
v=
n
s0
n
s
n0
I
c
2L
a
sin 1 =
c=
Ipoint =
ref
prad
=
1
1
1
= + 0
f
s s
1.22
D
1
= 3.00 108 m/s
0 0
~= 1E
~ B
~
S
0
~0
~