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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
28-1
28.1 Theory of Capacitance
A capacitor is a system of two conducting electrodes separated by a dielectric material. e electrodes
have equal and opposite charges. e capacitance C of a capacitor is equal to the ratio of the absolute value
of th
e
ch
arge
Q to th
e
abs
olute
va
lue
of th
e
vo
ltage
be
tween
th
e
el
ectrodes,
wh
ich
ca
n
be ex
pressed
as
C
Q
V
=
(28.1)
where
C is the capacitance in farads (F)
Q is the charge in coulomb (C)
V
i
s
t
he
v
oltage
(
V)
e unit of capacitance, the farad, is a large unit; practical capacitors have capacitances in microfar-
ads
(μF or l0
−6
F), nanofarads (nF or 10
−9
F), and picofarads (pF or 10
−12
F). e conversions of
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Publisher Resources

ISBN: 9781439848913