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a rod of length l and cross section of area A has. a variable conductivity given by k=alpha T

Dravit , 6 Years ago
Grade 12th pass
anser 1 Answers
Saurav

Last Activity: 6 Years ago

"Heat current : `i = - k A (dT)/(dx)`"
"` idx = - kA dT => i in^lt_0 dx = - A \alpha \tiny \intT2T1​ T dT`"
"`=> i l = - A \alpha ( T12-T22)/2 => i = ( A \alpha ( T22 - T12))/(2l) `"

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