When there is vacuum between the plates,
0
0
E
εσ
=
Factors affecting capacitance, capacitors in action
Interactive Java tutorial
http://micro magnet fsu edu/electromag/java/capacitance/
Rationalised 2023-24
Physics
70
and the potential difference  V0 is
V0 = E0d
The capacitance C0 in this case is
0
0
0
Q
A
C
V
εd
=
=
(2