文档介绍：Solutions Manual
ic
Fields and
Energy
Hermann A. Haus
James R. Melcher
Massachusetts Institute of Technology
ill PRENTICE HALL, Englewood Chffs, New jmey 07632
PREFACE TO SOLUTION MANUAL
We are fortunate that ic aspects of engineering systems are ac­
curately described by remarkably concise and general laws. Yet, a price paid for
the generality of Maxwell's equations is the effort required to make these laws of
practical use to the engineer who is not only analyzing, but synthesizing and invent­
ing. Key to the maturation of an engineer who hopes to use a basic background in
ic fields for effectively dealing plex problems is working out
examples that strike the right balance among a number of interrelated objectives.
First, even in the beginning, the examples should couch the development of skill in
using the mathematical language of field theory in physical terms. Second, while be­
ing no more mathematically involved then required to make the point, they should
collectively give insight into the key phenomena implied by the general laws. This
means that they have to be sufficiently realistic to at least be physically demon­
strable and at best of practical interest. Third, as the student works out a series of
examples, they should form the basis for having an overview of ics,
hopefully helping to achieve an early maturity in applying the general laws.
In teaching this subject at MIT, we have placed a heavy emphasis on working
out examples, basing as much as 40 percent of a student's grade on homework solu­
tions. Because new problems must then be generated each term, this emphasis has
mandated a continual search and development, stimulated by faculty and gradu­
ate student teaching assistant colleagues. Some of these problems have e the
"examples," worked out in the text. These have in turn determined the develop­
ment of the demonstrations, also described in the text (and available on video