# The line Y=1, Z=-3 carries charges 30 nc/m while the plate X=1 carries 20 nc/m2 . Find E at origin

Arun Kumar IIT Delhi
8 years ago
Electric field by a wire is away from the wire and so in the case of plate.
$\vec E_{x=1}=-\sigma /2\epsilon\vec i$
$\vec E_{y=1,z=-3}=(-\lambda /2\pi \sqrt{3^2+1})(-\vec j+3\vec k)/\sqrt{3^2+1}$