Problem A10: In the figure above, there is a constant electric field given by
**E** = ( 5 **i** - 3 **j** ) J/C/M. The point a is at the origin (0,0), and the point b is
at the coordinates (n_{1},n_{2}) meters in the x-y plane. What is n_{3} in
the expression for the potential difference between point a and point b :V(a)-V(b)=n_{3} J/C.

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