A constant electric field of 250 n/c is between a set of parallel plates that have a potential difference between them of 12.0 V. How far apart are the plates?
Since the field is uniform, the potential difference is the product of the field intensity by the distance between the plates:
V = E.d
d = V/E
d = (12 V)/(250 N/C) = 0.048 m = 48 mm
Note: V = N m/C