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43. (a) Using Table 271 and Eq. 2710 (or Eq. 2711), we have
¯
¯
¯
~
E
¯
¯
¯
=
ρ
¯
¯
¯
~
J
¯
¯
¯
=
(
1
.
69
×
10
−
8
Ω
·
m
)
µ
2
.
0A
2
.
0
×
10
−
6
m
2
¶
=1
.
7
×
10
−
2
V
/
m
.
(b) Using
L
=4
.
0 m, the resistance is found from Eq. 2716:
R
=
ρL/A
=0
.
034 Ω. The rate of thermal
energy generation is found from Eq. 2722:
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
 Fall '08
 SPRUNGER
 Physics, Resistance, Energy

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