A platinum resistance thermometer reads at

PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity

Problem

A platinum resistance thermometer reads R0=10.0 ΩR_0 = 10.0\,\Omega at 20 ∘ ⁣C20\,^{\circ}\!\text{C}. The temperature coefficient of resistivity for platinum is α=3.9×10−3 ∘ ⁣C−1\alpha = 3.9\times10^{-3}\,{}^{\circ}\!\text{C}^{-1}. Calculate the resistance of the thermometer when its temperature is 100 ∘ ⁣C100\,^{\circ}\!\text{C}.

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