Positive electric charge Q is distributed uniformly along a line with length 2a, lying along the y-axis between y=-a and y=+a. Find the electric field at point P on the x-axis at a distance x from the origin a dEPositive electric charge Q is distributed uniformly along a line with length 2a, lying along the y-axis between y=-a and y=+a. Find the electric field at point P on the x-axis at a distance x from the origin. y x O x Q a -a P 2 2 r = x + y dE  