48. There is a parallel-plate capacitor of capacitance C0. A slab of dielectric material with κ= 2 is placed into the gap between the plates, filling the bottom half of the gap. What is the resulting capacitance?
(A)
(B)
(C)
(D)2C0
(E) 3C0

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統計： A(0), B(0), C(7), D(1), E(0) #2993347