Physics-Resistance & Resistivity
NEET Physics Resistance & Resistivity MCQ Question
Type: MCQ-diagram based-Easy-Class 12
Consider a platinum resistance thermometer with a diagram showing three resistances: R_0 at the ice point, R_100 at the steam point, and R_t at an unknown temperature. Which formula is used to calculate the temperature of the bath using these resistances?
A
t = (R_t - R_0) / (R_100 - R_0) * 100
B
t = (R_t + R_0) / (R_100 - R_0) * 100
C
t = (R_t - R_100) / (R_0 - R_100) * 100
D
t = (R_t - R_0) / (R_0 + R_100) * 100
Correct Answer
Option A
Detailed Explanation
The formula t = (R_t - R_0) / (R_100 - R_0) * 100 is used to find the temperature of the bath by comparing the resistance at the unknown temperature to the resistances at the ice and steam points.
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