49)
where K is a constant characteristic of the dielectric Clearly,  K > 1 We
then have
0
0
d
Qd
V
K
A
K
εσ
ε
=
=
(2 50)
The capacitance C, with dielectric between the plates, is then
0KA
Q
C
V
d
ε
=
=
(2