40)
In the inner region between the plates 1 and 2, the electric fields due
to the two charged plates add up, giving
0
0
0
0
2
2
Q
E
A
σ
σ
σ
ε
ε
ε
ε
=
+
=
=
(2 41)
The direction of electric field is from the positive to the negative plate Thus, the electric field is localised between the two plates and is
uniform throughout For plates with finite area, this will not be true near
the outer boundaries of the plates