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Foundations of Wireless and Electronics, 10th Edition
book

Foundations of Wireless and Electronics, 10th Edition

by M. G. Scroggie, S. W. Amos
October 2013
Intermediate to advanced content levelIntermediate to advanced
570 pages
27h 46m
English
Newnes
Content preview from Foundations of Wireless and Electronics, 10th Edition
61
4.5 Lenz's
Law
In
Sec 4.3 we
noted
the
direction
of the
induced
e.m.f. in
relation
to
the direction
of the
flux inducing
it. By
comparing Fig.
4.6
with
Fig.
4.5
we see
that
a
self-induced
e.m.f.
would tend
to
send current
round
the
circuit
in the
opposite direction
to the
current producing
the flux that
is
inducing
it. In
more general terms,
any
induced
e.m.f.
tends
to
oppose
its
cause. This statement
is
known
as
Lenz's law,
and
is really inevitable, because
if
induced e.m.fs aided their cause there
would
be no
limit
to
their growth.
So it is
easy
to
remember.
When
you try to
stop
the
clockwise current
in
Fig.
4.5 by
switching
off, the
flu ...
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Publisher Resources

ISBN: 9781483105574