Two metal electrodes of size 2.0 cm \times 2.0 cm are spaced 1.0 mm apart and connected by wires to the terminals of a 9.0 {\rm V} battery.

A- What is the charge on each electrode?

B- What is the potential difference between electrodes?

C- The wires are disconnected, and insulated handles are used to pull the plates apart to a new spacing of 2.0 mm.
What is the charge on each electrode?