Three capacitors each of capacity $4\,\mu \,F$ are to be connected in such a way that the effective capacitance is $6\,\mu \,F$. This can be done by
AIPMT 2003, Easy
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(b) The given circuit can be drawn as follows
$C_{AB} = 2+4 = 6\,µF$
$C_{AB} = 2+4 = 6\,µF$
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