Name the current that exist between the plates of a capacitor.

A sheet of aluminium foil of negligible thickness is Introduced, between the” plates of a capacitor. The capacitance of the capacitor ___________.

A parallel plate capacitor with air between the plates has a capacitance of 8µF. What will be the capacitance if the distance between the plates is reduced by half and the space between is filled with a medium of dielectric constant 5?