A capacitor of capacitance C = 900 pF is charged fully by 100 V battery B as shown in figure (a). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance C = 900 pF as shown in figure (b). The electrostatic energy stored by the system (b) is

1. A. 3.25 10 -6 J
2. B. 2.25 10 -6 J
3. C. 1.5 10 -6 J
4. D. 4.5 10 -6 J

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