For a wall of a given material and of a fixed surface area, the rate of heat loss by conduction through the wall is inversely proportional to the thickness \( T \) of the wall and directly proportional to the temperature difference \( d \) across the wall.

The rate of heat loss could be given by which of the following expressions?

A. \( \frac{2d}{T} \)

B. \( \frac{2T}{d} \)

C. \( 2d + \frac{1}{2}T \)

D. \( 2(d + \frac{1}{2}T) \)

E. \( \frac{T}{d} \)

the answer is A .2d/T Since d is directly proportional to the heat lost it should be the numerator since T is inversely proportional to the heat lost it shoudl be the denormirator that is 1/T ; 2 is the constant the actual formula is R = kd/T

Answered by Poknoy | 2024-06-10

The rate of heat loss by conduction through a wall is directly proportional to the temperature difference across it and inversely proportional to the thickness of the wall. The correct expression for this situation, as provided in the options, is option A: T 2 d ​ .
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Answered by Poknoy | 2024-12-20