I
realizethat,
no
matter
how
careful
I
have
endeavored
to
be,
occasional
errors
may
still
exist.
I
should
be
grateful
i
youwouldbe
kind
enough
to
notify
me
a3you
discover
them
either
in
the
book
orin
this
manual.
Sincerely,
DavidK Cheng
Electrical
andComputer
Engineering
Department
Syracuse
University
Syracuse,
1321
For
the
use
of
instru tors
only.
roduced
by
AddisonWesley
from
cameraready
copy
supplied
by
the
lhor.I yright
1983
by
·AddiRonWealey
Publishing
Company
Inc.
I
rightsreserved.
No
part
of
this
publication
may
be
reproduced.
Ired
in
a
retrieval
sY8tem~ran mitlted
in
any
form
or
byany
Ins
electronic
mechanical
photocopying
recording
or
otherwise
lhout
the
prior
written
permi8sion
ofthe
publisher.Printed
in
United
States
of
America.
Publishedsimultaneously
in
Canada.
N
0 201 10129 1
FGHIJ·AL 89818
A
note
to
instructors
using
FIELD
N
W VE
ELECTROH GNETICS
Dear
Colleague:
As
teachers
of
introductoryelectromagnetics,
we
are
all
aware
of
two
facts:that
most
studentsconsiderthe
subject
matter
difficult
and
that
thereare
numerousbookson
the
market
dealing
with
this
subject.
t
is
understandable
that
s~u nts
findelectromagnetics
difficult.
First
of
all
the
subject
ma
tter
is
buil
t
upon
abstract
models
that
demand
agood
math
ematical
background.
Second
before
the
course
on
elec
tromagnetics,
students
whohave
studied
circuit
theory
normally
encounter
functions
of
only
one
independent
variable,
namely,
time
whereas1n
electromagneticsthey
are
suddenly
required
to
deal withfunctions
of
four
variables
space
and
time).
This
is
a
big
transition,
and
visualization
problems
associated
with
solid
geometryadd
tothe
difficulty.
Finally,
students
areoften
confused
about
the
w y
t
subject
matter
Is
developed
even
after
they
havecompleted
the
course,
mainly
because
mostbooksdo
not
provide
a
unified
and
comprehensible
approach.
AsI
point
out
in
the
Preface
of
the
book
the
inductive
ap
proach
of
beginning
with
thevariousexperimental
laws
tends
to
be
fragmentedand
lacks
cohesiveness,
whereas
the
practiceof
writing
the
four
general
Maxwell s
equations
at
the
outset
without
discussing
their
necessity
and
sufficiency
presents
amajor
stumblingblock
for
learning.Students
are
often
puzzled
about
the
structureof
theelectromagnetic
model.I
sincerely
believe
that
the
gradual
axiomaticapproach
based
on
Helmholtz s
theoremusedin
this
book
provides
unityin
thegradational
development
of
the
electromagnetic
modelfrom
the
very
simple
model
for
electrostatics.
Although
rigorous
mathematicalproof
of
Helmholtz s
theorem
is
relatively
involved
not

cluded
in
the
book
the
physical
concept
of
specifying
both
the
flow
source
and
the
vortex
circulation)
source
inordertodefine
a
vector
field
is
Quite
simple.
Many
review
~Destlons
are
provided
at
the
end
of
each
chapter.
They
are
deSigned
toreview
n
reinforce
the
essential
material
1n
thechapter
without
the
need
for
a
calculator.
You
may
wish
to
use
them
as
a
vehicle
fordiscussion
in
class.
I
have
tried
to m~ke
the
problems
in
each
chapter
meaningfUl
and
to
avoid
trlvlal
number plu~1ng
types.
This
solutions
manual
gives
the
solutions
andanswers
to
all
the
problems in
the
book.I
hope
it
proves
to
bea
usefulaid
in
teaching
from
the
book.Answers
to
oddnumberedproblems
are
included
in
the
back
of
the
book.
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