A platinum resistance thermometer records 3.0\(\Omega\) at 0 o C and 8.0\(\Omega\) at 100 o
PHYSICS
JAMB 1998
A platinum resistance thermometer records 3.0\(\Omega\) at 0oC and 8.0\(\Omega\) at 100oC. If it records 6.0\(\Omega\) in a certain environment, The temperature of the medium is
- A. 80oC
- B. 60oC
- C. 50oC
- D. 30oC
Correct Answer: B. 60oC
Explanation
8\(\Omega\).....100oC
6\(\Omega\).....\(\theta\)oC
3\(\Omega\).....0oC
\(\frac{6 - 3}{8 - 3}\) = \(\frac{\theta - 0}{100 - 0}\)
therefore, \(\theta\) = 60oC
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