Two circuits $(a)$ and $(b)$ have charged capacitors of capacitance $C, 2C$ and $3C$ with open switches. Charges on each of the capacitor are as shown in the figures. On closing the switches
AIEEE 2012, Medium
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Charge ( or current) always flows from higher potential to lower potential.

$Potential =\frac {Charge}{Capacitance}$

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