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Byju's Answer
Standard XII
Physics
Potential and Potential Energy Relation
What is the p...
Question
What is the potential of the inner sphere? What is the potential at r = 0?
A
Q
2
R
2
+
Q
1
R
1
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B
Q
2
R
2
−
Q
1
R
1
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C
Q
2
−
Q
1
R
1
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D
Q
2
+
Q
1
R
1
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Solution
The correct option is
A
Q
2
R
2
+
Q
1
R
1
Potential of inner sphere due to charge on inner sphere
=
V
1
=
k
e
Q
2
R
2
Potential of inner sphere due to charge on outer sphere
=
V
2
=
k
e
Q
1
R
1
Hence, total potential of outer sphere
=
V
=
V
1
+
V
2
⟹
V
=
k
e
(
Q
1
R
1
+
Q
2
R
2
)
The potential at centre that is at
r
=
0
is same as that of the inner sphere that is
V
.
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0
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times :
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