A platinum resistance thermometer reads 5.00 Ω at 0°C and 5.23 Ω at 10…

Question

A platinum resistance thermometer reads 5.00 Ω at 0°C and 5.23 Ω at 100°C. When its resistance is 5.795 Ω, the temperature is about:

Accepted Answer

A. 345 °C

We have t = (R_t − R_0)/(R_100 − R_0)×100.
That is t = (5.795 − 5)/(5.23 − 5)×100.
So t = (0.795/0.23)×100 ≈ 345 °C.

Answer

100 °C

Answer

580 °C

Answer

200 °C

A platinum resistance thermometer reads 5.00 Ω at 0°C and 5.23 Ω at 100°C. When its resistance is 5.795 Ω, the temperature is about: