A parallel plate capacitor is charged to a potential difference of $50\, V$. It is discharged through a resistance. After $1$ second, the potential difference between plates becomes $40 \,V$. Then

  • A

    Fraction of stored energy after $1$ second is ${16}/{25}$

  • B

    Potential difference between the plates after $2$ seconds will be $32\, V$

  • C

    Potential difference between the plates after $2$ seconds will be $20\, V$

  • D

    Both $(a)$ and $(b)$

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