Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the____________________?
Correct answer: B. Sum of all resistances
- A. Maximum resistance in the series
- B. Sum of all resistances
- C. Average of all resistances
- D. Minimum resistance presents in the series
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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