Question

What is the correct formula for the rate of heat transfer (q) through a plane wall of

thickness l and surface are A, when temperature difference between two surfaces is ΔT ?

The thermal conductivity is k.

a. q = (k A ΔT) / l

b. q = k A l ΔT

c. q = (ΔT) / (k A l)

d. none of the abovet
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Answer 1

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