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Topic
12th Grade
Physics
Capacitance
Question
If in the infinite series circuit, C = 9
μ
F
and
C
1
=
6
μ
F
then the capacity across AB is
Options:
A
.
 1.25μF
B
.
 6μF
C
.
 3μF
D
.
 12μF
Answer: Option C
:
C
1
C
A
B
=
1
c
+
1
c
1
+
x
+
1
c
1
x
=
1
9
+
1
6
+
x
+
1
9
1
x
−
1
6
+
x
=
2
9
6
+
x
−
x
x
(
6
+
x
)
=
2
9
27
=
x
(
6
+
x
)
x
=
3
μ
F
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