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E&M
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Homework Statement
Two infinitely long parallel wires separated by a distance 2d, one carries uniform linear charge density of [tex]\lambda[/tex] and the other one carries an uniform linear charge density of -[tex]\lambda[/tex], find the electric field at a point distance z away from the middle point of the two wires.
Homework Equations
E(left wire) = [tex]\lambda[/tex].K .integration (1/r^2). dr
E(right wire) = - [tex]\lambda[/tex].K .integration (1/r^2). dr
The Attempt at a Solution
r = (x^2 + d^2 + z^2)
dr = dx
i don't know what should be the limit of integration and i don't know if whatever i did is right or not.