A conductor of area of cross-section 100${\ cm}^{2}$ and length 1 cm has coefficient of thermal conductivity 0.76${cals}^{- 1}m^{- 1}K^{- 1}$. If 30 cal of heat flows through the conductor per second. Find the temperature difference across the conductor.

Question

Dr. Abubacker · Accepted Answer

(a) Heat current $H = \frac{KA\mathrm{\Delta}	heta}{l}$
$	herefore$ $\mathrm{\Delta}	heta = \frac{Hl}{KA}$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  = \frac{30 	imes 1 	imes 10^{- 2}}{0.76 	imes 100 	imes 10^{- 4}} = 39.47$
$= 40℃(approx.)$

Q. A conductor of area of cross-section 100${\ cm}^{2}$ and length 1 cm has coefficient of thermal conductivity 0.76${cals}^{- 1}m^{- 1}K^{- 1}$. If 30 cal of heat flows through the conductor per second. Find the temperature difference across the conductor.

Explanation

Reviewed by Dr. Abubacker

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