27 Gaussian surface for a
uniformly charged infinite plane sheet Rationalised 2023-24
Electric Charges
and Fields
35
2 EA = sA/e0
or,  E = s/2e0
Vectorically,
0
ˆ
2
εσ
E=
n
(1 33)
where ˆn  is a unit vector normal to the plane and going away from it E is directed away from the plate if s  is positive and toward the plate
if s is negative