Two parallel plate air filled capacitors, each of copncitance \( C \), nre joined to a source of...

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Two parallel plate air filled capacitors, each of copncitance \( C \), nre joined to a source of constant emf \( V \)
as shown in figure. The plate \( A \) is earthed. Plates \( B \) and \( C \) яre connected together. Plate \( D \) is comnected to the pusitive pule of the battery whose negative is earthed. The combined capacitance of the ar agerment is
(A) \( 2 C \)
(B) \( C \)
(C) \( C / 2 \)
(D) \( 3 C \)
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