A parallel-plate capacitor has plates separated by 080mm

Question

Solve the all parts of given problem:

Problem: A parallel-plate capacitor has plates separated by 0.80mm.

Part A: If the electric field between the plates has a magnitude of 2.1x10⁵ N/C, what is the potential difference between the plates?

Part B: If the electric field between the plates has a magnitude of 2.9x10⁴ N/C, what is the potential difference between the plates?

Any expert will able to provide correct answer for the above problem.