Two circuits (a) and (b) have charged capacitors of capacitance C, 2C and 3C with open switches. Charges on…

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

Circuit (a) Circuit (b)
  1. No charge flows in (a) but charge flows from $R$ to $L$ in (b)
  2. Charges flow from $L$ to $R$ in both (a) and (b)
  3. Charges flow from $R$ to $L$ in (a) and from $L$ to $R$ in (b)
  4. No charge flows in (a) but charge flows from $L$ to $R$ in (b)

Solution

Charge (or current) always flows from higher potential to lower potential. Potential $=\frac{\text { Charge }}{\text { Capacitance }}$

Asked in: JEE Main 2012 (07 May Online)

Practice more Electrostatics questions on Aicharya