MT1--2008--Answers

MT1--2008--Answers - MT1
–
2008
Answers


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Unformatted text preview: MT1
–
2008
Answers
 1.

Ex
=
0.078
k
Q
/
L2
,

Ey
=
3.063
k
Q
/
L2

,
E
=
3.0642
k
Q
/
L2


at
an
angle
of
88.54
deg
above
the
+
x
axis.
 

******************************************
 2.(a)
Ea
=
Q
r
/
(4
π
ε0
a3
)
for
r
<
a
 2.(b)
Eb
=
Q
/
(4
π
ε0
r2
)
for
a
<
r
<
b
 2.(c)
Ec
=
0
for
b
<
r
<
c
 2.(d)

Vb
=
5
k
Q
/
c
 2.(e)
Work
Done(
b

a)

=
q
Q
/
(4
π
ε0
)
(
1/a
–
1/b
)
>
0
 
 3.(a)
κ
=
2.26
 3.(b)

E
=
3.77
x
109
V/m
 3.(c)
V1
=
19.95
Volts,

V2
=
0.08
Volts,

V3
=
20.03
Volts
 3.(d)

L1
=
0.36
m

 ...
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