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Questions  

What is effective capacitance between points X and Y ?

a
24 μF
b
18 μF
c
12 μF
d
6 μF

detailed solution

Correct option is D

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.

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