Final answer:
The ideal rate of heat transfer through a uniform wall is directly proportional to the overall coefficients of heat transfer and indirectly proportional to the thickness of the wall.
Step-by-step explanation:
The ideal rate of heat transfer through a section of a uniform wall is directly proportional to the overall coefficient of heat transfer and inversely proportional to the thickness of the wall. This can be expressed using the equation:
Rate of heat transfer = (overall coefficient of heat transfer × surface area × temperature difference) / thickness of the wall.
Therefore, the correct option is Option C) directly proportional to the overall coefficients of heat transfer and indirectly proportional the thickness of the wall.