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Standard XII
Physics
Magnetic Field Due to a Circular Arc at the Centre
Three large p...
Question
Three large plates are arranged as shown. How much charge will flow through the key k if is closed?
A
5
Q
6
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B
4
Q
3
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C
3
Q
2
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D
None
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Solution
The correct option is
A
5
Q
6
q
1
+
q
2
=
2
q
V
A
B
V
A
C
=
Q
1
C
1
=
Q
2
C
2
Q
1
C
1
=
Q
2
C
2
=
2
,
q
1
=
2
q
2
Q
1
=
4
Q
3
,
Q
2
=
2
Q
3
charge flow through
−
Q
2
−
(
−
q
1
)
=
−
Q
2
+
4
Q
3
5
Q
6
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