Use the following formula for the electric field strength between two parallel plates:
E = V/d
where,
V: potential difference = 25V
d: distance between plates = 5 cm = 0.05 m
Replace the previous values of the parameters into the formula for E:
[tex]E=\frac{25V}{0.05m}=500\frac{V}{m}[/tex]Hence, the electric field strength is 500V/m
