17.Consider a parallel-plate capacitor of plate area A and plate separation. A potential difference Vo is applied
between the plates. The battery is then disconnected, and a dielectric slab of thickness b and dielectric
constant k is placed between the plates. Assuming A
100cm2
, d
1.00cm, Vo
90V, b
0.8cm, k
2.00.
What is the capacitance with the slab in place?
(
)
(A)14.8pF (B)16.8pF (C)17.9pF (D)20.9pF (E)21.9pF