Jessica Ann Elrod
 PHY 232 Spring 2007
1
Set 02 (01/23 midnight)
Due date: Tue Jan 23 23:59:00 2007
Select True or False for the following statements about con
ductors in electrostatic equilibrium.
Choices:
True
,
False
.
A. Charges prefer to be uniformly distributed throughout
the volume of a conductor.
B. All points of a conductor are at the same potential.
C. The electric field inside the conducting material is al
ways zero.
D. Just outside the surface of a conductor, the electric field
is always zero.
You are correct.
Your receipt is 1622243
The figure shows three charges q
1
, q
2
and q
3
situated at cor
ners of a rectangle of sides a = 14.0 cm and b = 8.0 cm.
q
3
q
q
2
1
a
b
For q
1
= 4.10
μ
C, q
2
= 4.10
μ
C, and q
3
= 2.30
μ
C find the
electric potential at the center of the rectangle.
Tries
0/12
Continuing with the figure above, how much of the electric
energy of the system would be expended in moving q
3
to
infinity while q
1
and q
2
remain in their positions?
Tries
0/12
The figure below shows two points in an electric field. Point
1
is at (X
1
,Y
1
) = (3,4), and point
2
is at (X
2
,Y
2
) = (12,9). (The
coordinates are given in meters.) The electric field is constant
with a magnitude of 65.3 V/m, and is directed parallel to the
+Xaxis. The potential at point
1
is 1100.0 V.
Y
X
.
1
.
2
Calculate the potential at point
2
.
Tries
0/12
Calculate the work required to move a negative charge of Q=
470.0
μ
C from point
1
to point
2
.
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 Spring '06
 MR.Nagy
 Charge, Electrostatics, Potential Energy, Static Equilibrium, Work, Electric charge

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