Electric field due to a small length of wire:

$\overline{){\mathbf{d}}{\mathbf{E}}{\mathbf{=}}{\mathbf{k}}\frac{\mathbf{d}\mathbf{Q}}{{\mathbf{x}}^{\mathbf{2}}}{\mathbf{=}}{\mathbf{k}}\frac{\mathbf{\lambda}\mathbf{d}\mathbf{x}}{{\mathbf{x}}^{\mathbf{2}}}}$

A straight wire of length L has a positive charge Q distributed along its length.

Find the magnitude of the electric field due to the wire at a point located a distance d from one end of the wire along the line extending from the wire. Find E_{net}, the magnitude of the electric field at point P due to the total charge.

Express your answer in terms of some or all of the variables Q, L, and *d*, and the constants k and/or ϵ_{0}.

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