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A parallel plate capacitor of capacitance 2 F is charged to a potential V. The energy stored in the capacitor is E 1 . The capacitor is now connected to another uncharged identical capacitor in parallel combination. The energy stored in the combination is E 2 . The ratio E 2 /E 1 is :

1. 2 : 1
2. 2 : 3
3. 1 : 2
4. 1 : 4

Correct answer: 1 : 2

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