A platinum resistance thermometer has a resistance 4\(\Om...
A platinum resistance thermometer has a resistance 4\(\Omega\) at 0°C and 10\(\Omega\) at 100°C. Assuming the resistance changes uniformly with temperature. Calculate the resistance of the thermometer when the temperature is 45°C.
14.0\(\Omega\)
6.7\(\Omega\)
3.2\(\Omega\)
2.7\(\Omega\)
Correct answer is B
\(\frac{R - 4}{10 - 4} = \frac{45 - 0}{100 - 0}\)
R = \(\frac{670}{100} = 6.7\Omega\)