4
6.1 Capacitors (2)
•
Capacitance
C
is the ratio of the charge
q
on one
plate of a capacitor to the voltage difference
v
between the two plates, measured in farads (F).
•
Where
e
is the permittivity of the dielectric material
between the plates,
A
is the surface area of each
plate,
d
is the distance between the plates.
•
Unit: F, pF (10
–12
), nF (10
–9
), and
and
m
F (10
–6
)