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Problem - Compute the potential difference between the points (4,6,3) and (8,1,6) due to a constant electrostatic field given by E = (2 ihat + 7 jhat + 12 khat) N/C. distance in meters

## Homework Equations

F

_{q}= qE

Vr = Keq

_{1}/(r-r

_{1})

F

_{q}= (Kq

_{1}(r-r

_{1}))/(r-r

_{1})

^{3}

## The Attempt at a Solution

I can't figure out how to solve.

Currently I combined the two points to find the vector magnitude and then found the maginute of E. then plugged into the Fq = qE problem to solve for q. Then plugged into the Vr equation. I don't believe this is correct though and should be using the third equation as well.