<s>
A	O
perfect	B-Algorithm
conductor	I-Algorithm
or	O
perfect	B-Algorithm
electric	I-Algorithm
conductor	I-Algorithm
(	O
PEC	O
)	O
is	O
an	O
idealized	O
material	O
exhibiting	O
infinite	O
electrical	O
conductivity	O
or	O
,	O
equivalently	O
,	O
zero	O
resistivity	O
(	O
cf	O
.	O
</s>
<s>
Another	O
example	O
is	O
electrical	O
circuit	B-Application
diagrams	I-Application
,	O
which	O
carry	O
the	O
implicit	O
assumption	O
that	O
the	O
wires	O
connecting	O
the	O
components	O
have	O
no	O
resistance	O
.	O
</s>
<s>
Perfect	B-Algorithm
conductors	I-Algorithm
:	O
</s>
<s>
have	O
exactly	O
zero	O
electrical	O
resistance	O
-	O
a	O
steady	O
current	O
within	O
a	O
perfect	B-Algorithm
conductor	I-Algorithm
will	O
flow	O
without	O
losing	O
energy	O
to	O
resistance	O
.	O
</s>
<s>
Resistance	O
is	O
what	O
causes	O
heating	O
in	O
conductors	O
,	O
thus	O
a	O
perfect	B-Algorithm
conductor	I-Algorithm
will	O
generate	O
no	O
heat	O
.	O
</s>
<s>
Since	O
energy	O
is	O
not	O
being	O
lost	O
to	O
heat	O
,	O
the	O
current	O
will	O
not	O
dissipate	O
;	O
it	O
will	O
flow	O
indefinitely	O
within	O
the	O
perfect	B-Algorithm
conductor	I-Algorithm
until	O
there	O
exists	O
no	O
potential	O
difference	O
.	O
</s>
<s>
require	O
a	O
constant	O
magnetic	O
flux	O
-	O
the	O
magnetic	O
flux	O
within	O
the	O
perfect	B-Algorithm
conductor	I-Algorithm
must	O
be	O
constant	O
with	O
time	O
.	O
</s>
<s>
Any	O
external	O
field	O
applied	O
to	O
a	O
perfect	B-Algorithm
conductor	I-Algorithm
will	O
have	O
no	O
effect	O
on	O
its	O
internal	O
field	O
configuration	O
.	O
</s>
<s>
In	O
perfect	B-Algorithm
conductors	I-Algorithm
,	O
the	O
interior	O
magnetic	O
field	O
must	O
remain	O
fixed	O
but	O
can	O
have	O
a	O
zero	O
or	O
nonzero	O
value	O
.	O
</s>
