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Statement-1: The temperature dependence ...

Statement-1: The temperature dependence of resistance is usually given as `R=R_0(1+alphaDeltaT)`. The resistance of a wire changes from `100Omega to 150Omega` when its temperature is increased from `27^@C to 227^@C`. This implies that `alpha=2.5xx10^-3//^@C`.
Statement 2: `R=R_0(1+alphaDeltaT)` is valid only when the change in the temperature `DeltaT` is small and `DeltaR=(R-R_0) lt ltR_0`.

A

Statement-1 is True,Statement-2 is True, Statement-2 is a correct explanation for Statement-1

B

Statement-1 is True,Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1

C

Statement -1 is True, Statement-2 is false.

D

Statement-1 is False, Statement-2 is True.

Text Solution

Verified by Experts

The correct Answer is:
D
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