A 200-Volt Battery Is Connected to a 0 $\kappa$ = 56 )

Short Answer

A 200-volt battery is connected to a 0.50-microfarad parallel-plate,air-filled capacitor.Now the battery is disconnected,with care taken not to discharge the plates.Some Pyrex glass is then inserted between the plates,completely filling up the space.What is the final potential difference between the plates? (The dielectric constant for Pyrex is $\kappa$ = 5.6. )