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.

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No charge flows in (a) but charge flows from L to R in (b)

Charges flow from L to R in both (a) and (b)

Charge flows from L to R in (a) but charge flows from R to L in (b)

Charges flow from R to L in (a) and from L to R in (b)

answer is B.

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Detailed Solution

Circuit (a) $\frac{Q}{C} > \frac{2 Q}{3 C}$ charge flows from L to R
Circuit (b) $\frac{2 Q}{2 C} > \frac{Q}{2 C}$ charge flows from R to L

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