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The plates of a capacitor are connected ...

The plates of a capacitor are connected to a source of emf and the energy stored is `U_(0)`. When dielectric material dielectric constant `K` is introduced between the plates filling the whole space, the energy stored becomes `U` Now.

A

`U gt U_(0)`

B

`U = U_(0)`

C

`U lt U_(0)`

D

The electric field intensity between the plates is less after the dielectric material is introduced.

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The correct Answer is:
A
As battery is connected, `V` is constant, `E` is also constant.
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