What is effective capacitance between points X and Y ?
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a
24 μF
b
18 μF
c
12 μF
d
6 μF
answer is D.
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Detailed Solution
This circuit is redrawn and is shown in fig. This is a case of balanced Wheatstone bridge. Capacitance C' between ABD 1C′=1C1+1C2=13 or C′=3μFCapacitance C" between ACD1C′′=1C3+1C4=13 or C′′=3μFCapacitance between X and YC=C′+C′′=3μF+3μF=6μF.