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Problem
Problem
Consider a spherical surface of radius 4 m centred at the origin. Point charges
+
q
+q
+
q
and
−
2
q
-2q
−
2
q
are fixed at points
A
(
2
m
,
0
,
0
)
A (2 \text{ m}, 0, 0)
A
(
2
m
,
0
,
0
)
and
B
(
8
m
,
0
,
0
)
B (8 \text{ m}, 0, 0)
B
(
8
m
,
0
,
0
)
respectively. Show that every point on the spherical surface is at zero potential.
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