Question

Which linear thermometer relation is used to find the temperature \(t\) when its resistance is \(R_t\)?

Options

• \[t=\frac{R_t+R_0}{R_{100}+R_0}\times100\]

• \[t=(R_t-R_0)(R_{100}-R_0)\times100\]

• \[t=\frac{R_{100}-R_0}{R_t-R_0}\times100\]

• \[t=\frac{R_t-R_0}{R_{100}-R_0}\times100\]

Answer 1

The linear thermometer relation is \(t=\frac{R_t-R_0}{R_{100}-R_0}\times100\). It compares the resistance change from \(0^{\circ}\mathrm{C}\) with the resistance change over the \(0^{\circ}\mathrm{C}\) to \(100^{\circ}\mathrm{C}\) interval.