find Capacitance between A and B
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Correct option is
B
3
4C
The corresponding equivalent circuit is as shown in figure.
The all capacitors on top are in series so the equivalent capacitance for top part is C
t
=(1/C+1/C+1/C)
−1
=C/3
Now this capacitance C
t
and bottom capacitance C are in parallel.
So the equivalent capacitance C
AB
=C
t
+C=C/3+C=4C/3
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