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A platinum resistance thermometer has a resistance 4\(\Om...

A platinum resistance thermometer has a resistance 4Ω at 0°C and 10Ω at 100°C. Assuming the resistance changes uniformly with temperature. Calculate the resistance of the thermometer when the temperature is 45°C.

A.

14.0Ω

B.

6.7Ω

C.

3.2Ω

D.

2.7Ω

Correct answer is B

R4104=4501000

R = 670100=6.7Ω