An empty parallel plate capacitor is connected between the terminals of a 5.85-V battery and charges up.

Question

An empty parallel plate is connected between the terminals of a 5.84-V battery and charges up. The capacitor is then disconnected from the battery, and the spacing between the capacitor plates is doubled. As a result of this change, what is the new voltage between the plates of the capacitor.

Answer 1

Video Attached!

Here's some theory and suggestions on how to approach solving this.