Physics 2212 K
Summer 2012
Quiz #1
Solutions
0 Permittivity constant
mp Mass of a proton
e
Fundamental charge
me Mass of an electron
K Coulomb constant = 1/40
g
Gravitational acceleration
Unless otherwise directed, friction, drag, and gravity should be ne
Physics 2212 K
Summer 2012
Quiz #2
Solutions
0 Permittivity constant
mp Mass of a proton
e
Fundamental charge
me Mass of an electron
K Coulomb constant = 1/40
g
Gravitational acceleration
Unless otherwise directed, friction, drag, and gravity should be ne
Physics 2212 K
Summer 2012
Quiz #3
Solutions
0 Permittivity constant
mp Mass of a proton
e
Fundamental charge
me Mass of an electron
K Coulomb constant = 1/40
g
Gravitational acceleration
Unless otherwise directed, friction, drag, and gravity should be ne
Physics 2212 K
Summer 2012
0
e
0
K
Quiz #4
Permittivity constant
Fundamental charge
Permeability constant
Coulomb constant = 1/40
mp
me
c
g
Solutions
Mass of a proton
Mass of an electron
Speed of light
Gravitational acceleration
Unless otherwise directed,
PHYS 2212
Recitation 01
Solution
May 21 24
Example
A thin straight rod of length L is centered on the x axis, as shown. It has a non-uniform
linear charge density that varies with position x according to
=
( x)
)3/2
0 ( 2
x + d2
cos
L3
L
where 0 and d ar
PHYS 2212
Recitation 02
Solution
May 29 Jun 04
Example
The electric eld everywhere is given by
(
E = E0
( y )
x2 z
x2 z
+ cos
+ 3 k
a3
a
a
)
where E0 is a positive constant. Find the total ux through
a cube of side a located in the rst octant, in term o
PHYS 2212
Recitation 03
Solution
Jun 05 11
Example
An innite cylinder of radius R has charge distributed in it with charge density
varying as
r
(r) = 0
R
where r is the distance from the axis of the cylinder. Find the electric eld at a
point P , which is
PHYS 2212
Recitation 04
Solution
Jun 12 18
Example
A charged disk of radius R and area charge density is centered at the origin with its axis
of symmetry aligned with the z axis. The electric potential along the z axis is:
V = 2k
[
]
z 2 + R2 z
with respe
PHYS 2212
Recitation 05
Example
Find the charge on the capacitor with
capacitance 3C0 , in terms of E and C0 .
Solution
Jun 19 25
PHYS 2212
Recitation 05
Problem
Find the energy stored in each of the capacitors in terms of
C0 and E , where Ca = C0 , Cb =
PHYS 2212
Recitation 06
Example
Find the potential dierence across
the resistor between points P and
Q.
Solution
Jun 26 Jul 02
PHYS 2212
Recitation 06
Problem
Find the current through the resistor with resistance 4R.
Solution
Jun 26 Jul 02