Final answer:
The electric field strength between the plates of a parallel-plate capacitor can be found using the formula E = V/d, where E is the electric field strength, V is the potential difference, and d is the separation distance. Using the given information and formula, the potential difference is calculated to be 4400 V.
Step-by-step explanation:
A parallel-plate capacitor is formed from two 6.4 cm diameter electrodes spaced 2.2 mm apart. To find the electric field strength between the plates, we can use the formula:
E = V/d
where E is the electric field strength, V is the potential difference between the plates, and d is the separation distance between the plates. In this case, the electric field strength is given as 2.0 x 10^6 N/C. By rearranging the formula, we can solve for V:
V = E * d = (2.0 x 10^6 N/C) * (2.2 x 10^-3 m) = 4400 V
Therefore, the potential difference between the plates is 4400 V.