P27_012.PDF

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Chapter 27 - 27.12
12. We find the conductivity of Nichrome (the reciprocal of its resistivity) as follows:
ρ = L
RA =
( V/i ) A = Li
VA =
(1 . 0m)(4 . 0A)
(2 . 0V)(1 . 0
10 − 6 m 2 ) =2 . 0
×
10 6 / Ω
·
m .
×
σ = 1
L
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