`C,V,U` and `Q` are capacitance, potential difference, energy stored and charge of parallel plate capacitor respectively. The quantities that increase when a dielectric slab is introduced between the plates without discounting the battery are

Options

A. `C,V,Q`
B. `C,U,Q`
C. `V,U,Q`
D. `C,V,U`

Answer

B

Explanation

Since battery remain connected, hence potential of capacitor remains same.
`C'=KC, C'gtC`
`Q'=C'V=KCV, Q=CV, Q'gtQ`
`U'=(1)/(2)C'V^(2)=(1)/(2)KCV^(2),U=(1)/(2)CV^(2),U'gtU`