Electric field due to a small length of wire:
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 Enet, 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 ϵ0.
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