`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, C and Q
D. V and Q

Answer

C

Explanation

V = constant
`C=kC_0`
`:. U=1/2 CV^2=kU_0`
`Q = CV =kQ_0`
Hence, U, Q and C increased.