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A platinum resistance thermometer wire has a re... - JAMB Physics 1992 Question

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 option: c

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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