`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 disconnecting the battery are

Options

A. V and C
B. V and U
C. U and Q
D. V and Q

Answer

C

Explanation

When battery remains connected
`C'=KC,Q'=KQ, V'=V,E'=E and U'=KU'`
U and Q both increases.