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Byju's Answer
Standard XII
Physics
Charging of Capacitors
In the circui...
Question
In the circuit shown is figure, switch is closed then find the work done by battery till next steady state is achieved.
A
400
n
J
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B
600
n
J
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C
300
n
J
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D
200
n
J
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Solution
The correct option is
A
400
n
J
C
e
f
f
=
6
×
3
6
+
3
=
18
9
=
2
Δ
V
across
6
n
F
=
10
v
o
l
t
q
=
C
e
f
f
Δ
V
q
=
C
e
f
f
Δ
V
=
6
×
10
=
2
×
10
=
60
=
20
Excess work done due to closing the switch is
W
=
Δ
q
V
=
10
(
60
−
20
)
=
400
n
C
×
J
C
=
400
n
J
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2
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