Statement - 1: The temperature dependence of resistance is usually given as R=R0(1+α∆t). The resistance of wire changes from 100Ω to 150Ω when its temperature is increased from 27∘C to 227∘C. This implies that α=2.5×10−3∕C.
Statement - 2: R=R0(1+α∆t) is valid only when the change in the temperature ∆T is small and ∆T=(R−R0)<<R0.

Question

Examsnet · Accepted Answer

Correct Answer is : Statement −1 is false, Statement −2 is true

AIEEE 2009 Solved Paper