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Physics
Physics
Problem
For a uniform slab of thickness
l
l
l
, cross-sectional area
A
A
A
and thermal conductivity
k
k
k
, the thermal resistance
R
R
R
of the slab is a)
2
l
k
A
\displaystyle \frac{2l}{kA}
k
A
2
l
b)
l
2
k
A
\displaystyle \frac{l}{2kA}
2
k
A
l
c)
l
k
A
\displaystyle \frac{l}{kA}
k
A
l
d)
3
l
2
k
A
\displaystyle \frac{3l}{2kA}
2
k
A
3
l
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