The plates of a parallel plate capacitor with no dielectric are connected to a voltage source. Now a dielectric of dielectric constant $K $ is inserted to fill the whole space between the plates with voltage source remaining connected to the capacitor.

  • A

    the energy stored in the capacitor will become $K$ -times

  • B

    the force of attraction between the plates will increase to $K^2$-times

  • C

    the charge on the capacitor will increase to $K$-times

  • D

    all of the above

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