Solve the given parts of following question:
Question: A 3.0cm x 3.0cm parallel-plate capacitor has 3.0 mm spacing. The electric field strength inside the capacitor is 1.4 x 105 V/m.
Part A: What is the potential difference across the capacitor?
Part B: How much charge is on each plate?
Please show all work to determine the potential difference across the capacitor.