Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the____________________?
Correct answer: D. Sum of all resistances
- A. Maximum resistance in the series
- B. Minimum resistance presents in the series
- C. Average of all resistances
- D. Sum of all resistances
Explanation
For conductive resistances arranged in series, the same heat rate passes through each resistance and the temperature drops add. Therefore the overall resistance is Rtotal = R1 + R2 + ..., not the maximum, minimum, or average resistance.
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