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Principles of Analog Electronics
book

Principles of Analog Electronics

by Giovanni Saggio
January 2014
Intermediate to advanced content levelIntermediate to advanced
567 pages
23h 13m
English
CRC Press
Content preview from Principles of Analog Electronics
Principles of Analog Electronics
138
Observation
Whenever electrons ow through an inductor, the magnetic eld that will
develop around that inductor can have considerable strength. So, it is believed
that some illusionists use such magnetic elds to create the illusion of levita-
tion (Figure 4.68).
4.7.5.2 Coaxial
Consider a coaxial inductor, as represented in
Figure4.69.
We have an inner conducting cylinder of radius a,
an outer conducting cylinder of radius b > a, and their
length l. The magnetic ux loop, which is along the inner
cylinder and closes along the outer one, results in
BdS
li
r
dr
li b
a22
ln
B
a
b
∫∫
ππ
Φ= =
µ
=
µ
Therefore, the inducta ...
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Publisher Resources

ISBN: 9781466582026