A platinum resistance thermometer reads 0° when its resistance is 80Ω and 100 o is when resistance is 90 Ω. Find the temperature at the platinum scale at which the resistance is 86 Ω.

Question

Philoid · Accepted Answer

60°C

Explanation:

Given

Resistance of thermometer at 0°C, R₀, is 80Ω

Resistance of thermometer at 100°C, R₁₀₀, is 90Ω

Formula used

Resistance varies linearly with temperature in a platinum resistance thermometer. The governing equation is,

Where,

R_T=resistance at which temperature is to be measured,

R₀=resistance at 0°C,

R₁₀₀=resistance at 100°C.

By substituting the values,

(Ans.)

Hence the temperature at 86Ω is 60° C

A platinum resistance thermometer reads 0° when its resistance is 80Ω and 100o is when resistance is 90 Ω. Find the temperature at the platinum scale at which the resistance is 86 Ω.

A platinum resistance thermometer reads 0° when its resistance is 80Ω and 100^o is when resistance is 90 Ω. Find the temperature at the platinum scale at which the resistance is 86 Ω.