If a dielectric doesn't completely fill the space between two plates, what could you conclude about V?

Hello, If no dielectric then capacitance will be the least.
If dielectric fills the entire gap then capacitance becomes the maximum.
If partial dielectric then capacitance would be in between the least and the maximum.

Now with a given amount of charge, then higher the capacitance less the value of V.

So as dielectric fills the gap then V decreases from the original value.
If suppose within a gap d between plates dielectric has filled t thickness, then the capacitance would be given by the expression C = epsilon not* A / [(d-t) + t/epsilon relative].