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?
Express your answer using two significant figures. Answer Q1= pC.

B- What is the potential difference between electrodes?
Express your answer using two significant figures. Answer Delta V1= V

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?
Express your answer using two significant figures. Answer Qf= pC

D- What is the potential difference between electrodes?
Express your answer using two significant figures. Answer Delta Vf= V