An air filled parallel plate capacitor is charged by connecting it to a battery. The battery is then disconnected from the capacitor without any loss of charges. A voltmeter reads 45 V across the plates. When a dielectric is inserted between the plates, completely filling the space, the voltmeter reads 11.5. What will be the voltmeter reading, if the dielectric is now pulled part way out so it fills only one third of the space (Area) between the plates.