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# Problem: A point charge with charge q1 is held stationary at the origin. A second point charge with charge q2 moves from the point (x1, 0) to the point (x2, y2).How much work W is done by the electrostatic force on the moving point charge?Express your answer in joules. Use k for Coulomb's constant (k=1/(4πε0)).

###### FREE Expert Solution

Work done:

$\overline{){\mathbf{W}}{\mathbf{=}}{\mathbf{∆}}{\mathbit{V}}}$

The potential of the system:

$\overline{){\mathbit{V}}{\mathbf{=}}\frac{\mathbf{k}{\mathbf{q}}_{\mathbf{1}}{\mathbf{q}}_{\mathbf{2}}}{\mathbf{r}}}$

The initial potential:

Vi = kq1q2/r

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###### Problem Details

A point charge with charge q1 is held stationary at the origin. A second point charge with charge q2 moves from the point (x1, 0) to the point (x2, y2).

How much work W is done by the electrostatic force on the moving point charge?