The circular plates A and B of a parallel plate air capacitor have a diameter of 0.1 m and are `2 xx 10^(-3) m` apart. The plates C and D of a similar capacitor have a diameter of `0.12 m` and are `3 xx 10^(-3)m` apart. Plate A is earthed. Plates B and D are connected together. Plate C is connected to the positive pole of a 120V battery whose negative is earthed. The energy stored in the system isA. `0.1224 mu J`B. `0.2224 mu J`C. `0.3224 mu J`D. `0.4224 mu J`

The circular plates A and B of a parallel plate air capacitor have a d

1.	The circular plates A and B of a parallel plate air capacitor have a diameter of 0.1 m and are `2 xx 10^(-3) m` apart. The plates C and D of a similar capacitor have a diameter of `0.12 m` and are `3 xx 10^(-3)m` apart. Plate A is earthed. Plates B and D are connected together. Plate C is connected to the positive pole of a 120V battery whose negative is earthed. The energy stored in the system isA. `0.1224 mu J`B. `0.2224 mu J`C. `0.3224 mu J`D. `0.4224 mu J`
Answer» Correct Answer - A

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