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56. Since the charge distribution is spherically symmetric we may write
E
(
r
)=
1
4
πε
0
q
encl
r
,
where
q
encl
is the charge enclosed in a sphere of radius
r
centered at the origin. Also, Eq. 2518 is
implemented in the form:
V
(
r
)
−
V
(
r
0
R
r
0
r
E
(
r
)
dr
. The results are as follows: For
r>R
2
>R
1
V
(
r
q
1
+
q
2
4
0
r
and
E
(
r
q
1
+
q
2
4
0
r
2
.
For
R
2
>r>R
1
V
(
r
1
4
0
µ
q
1
r
+
q
2
R
2
¶
and
E
(
r
q
1
4
0
r
2
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 Fall '08
 SPRUNGER
 Physics, Charge

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