Question

An infinitely long strip of negligible thickness is placed in the xy plan. The strip extends from x = −∞ to x = ∞ and from y = −d/2 to y = +d/2. A constant surface charge density σ (in C/m2) is placed on the the strip.
(a) Find the electric field ~ E at any point (x,y,0) where y > d/2.

(b) Find the electric field ~ E at any point (0,0,z) above the strip.

(c) In the previous two calculations, explain any 0 component of ~ E in terms of symmetries. (Use sketches if you want.)

Answer 1