What is the potential difference?

Question

An electric field in a given region of space is given by E=3.3x2i (in N/C). What is the magnitude of the potential difference between two points x=0 m and x=5.3 m, i.e. |V(x=5.3 m)-V(x=0 m)|?

Answer 1

If you don't know the answer, why don't you ask someone?

Answer 2

as the direction of E is in + x direction ,potential decreases along =x

as, d v = -e dl
here magnitude of e is constant =6.6 n/c and sign is (+)
dv=-6.6*(5.3-0)
= - 6.6*5.3 n/c
= - 34.89 n/c