Temperature coefficient of resistance of platinum is 4 \times 10^{-3} \/ {\K} at 20^{\circ} {\C}. Temperature at which increase in resistance of platinum is 10 \% its value at 20^{\circ} {\C} is

COMEDK Exam 2016 Solved Paper

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Temperature coefficient of resistance of platinum is 4×10−3∕K at 20∘C. Temperature at which increase in resistance of platinum is 10% its value at 20∘C is

25∘C
70∘C
45∘C
100∘C

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