Potential difference, uniform electric field

[aliaze1]

Homework Statement

What is the potential difference between A and B?

Homework Equations

ΔV=V_pos-V_neg=-∫E_sds

The Attempt at a Solution

I got the distance between the points to be about 0.0761577 m

After this I multiplied it by 1000, giving about 76.1577, which is incorrect

Thanks in advance for the help!

 

[rl.bhat]

Equipotential surfaces are perpendicular to the electric field lines of froces. Potential differece = VB - VA = E*d where d is the perpenicular distance between two parallel planes passing through A and B