A capacitor of capacity ${C_1}$ is charged upto $V$ volt and then connected to an uncharged capacitor of capacity ${C_2}$. Then final potential difference across each will be
AIPMT 2002, Medium
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(c) Common potential $V' = \frac{{{C_1}V + {C_2} \times 0}}{{{C_1} + {C_2}}} = \frac{{{C_1}}}{{{C_1} + {C_2}}}.V$
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