A platinum resistance thermometer wire has a resistance of 5 ohms at 0oC and 5.5…

A platinum resistance thermometer wire has a resistance of 5 ohms at 0oC and 5.5 ohms at 100oC. Calculate the temperature of the wire when the resistance is 5.2 ohms
  • A.
    80oC
  • B.
    60oC
  • C.
    40oC
  • D.
    10oC
Correct Answer: Option C
Explanation

100oC …. 5.5
(theta)oC …. 5.3
0oC …. 5.0
(frac{theta – 0}{100 – 0}) = (frac{5.5 – 5 .0}{5.5 – 5.0})
(theta) = 40oC

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