Nigerian Scholars » » A resistance thermometer has a resistance of 20$$\Omega$$ at 0oC and 85$$\Omega$$ at 100oC. If its resistance is 52$$\Omega$$in a medium, calculate the corresponding temper...

A resistance thermometer has a resistance of 20$$\Omega$$ at 0oC and 85$$\Omega$$ at 100oC. If its resistance is 52$$\Omega$$in a medium, calculate the corresponding temper...

Question

A resistance thermometer has a resistance of 20$$\Omega$$ at 0oC and 85$$\Omega$$ at 100oC. If its resistance is 52$$\Omega$$in a medium, calculate the corresponding temperature

A) 49.2oC

B) 60.6oC

C) 80.0oC

D) 84.7oC

Explanation:

85$$\Omega$$ ........100oC

52$$\Omega$$ ........$$\theta$$oC

20$$\Omega$$ ........0oC

$$\frac{52 - 20}{85 - 20} = \frac{\theta - 0}{100 - 0}$$

$$\theta = \frac{32 \times 100}{65} = 49.2^oC$$

Dicussion (1)

• 85$$\Omega$$ ........100oC

52$$\Omega$$ ........$$\theta$$oC

20$$\Omega$$ ........0oC

$$\frac{52 - 20}{85 - 20} = \frac{\theta - 0}{100 - 0}$$

$$\theta = \frac{32 \times 100}{65} = 49.2^oC$$