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Modern Electrical Installation for Craft Students, 3rd Edition
book

Modern Electrical Installation for Craft Students, 3rd Edition

by Brian Scaddan
November 2013
Intermediate to advanced content levelIntermediate to advanced
182 pages
6h 6m
English
Newnes
Content preview from Modern Electrical Installation for Craft Students, 3rd Edition
Inductors
and
inductance
3
The
unit
of
inductance
The unit
of
inductance
is the
henry (symbol H),
and is
defined
as
follows:
Λ circuit is said
to
possess
an
inductance of 1 henry, when
an
e.m.f.
of
1 volt
is
induced in that circuit
by a
current changing
at the
rate
of
1 ampere per
second.
Mutual
inductance: symbol,
M\
unit,
henry (H)
Let
us
consider
the
effect
of
winding
two
coils
on the
same iron core
(Diagram 3). This arrangement
is
called
a
transformer.
A change
of
current
in
coil
1
produces
a
change
of
flux which will
link with coil
2,
thus inducing
an e.m.f. in
that coil. These two coils
are
said
to
possess
the
property
of
mutual inductance, ...
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Publisher Resources

ISBN: 9781483106205