Resistance of the wire is measured as 2 $\Omega$ and 3 $\Omega$ at 10$^\circ$C and 30$^\circ$C respectively. Temperature co-efficient of resistance of the material of the wire is :

Question

0.033 $^\circ$C^$-$1

$-$0.033 $^\circ$C^$-$1

0.011 $^\circ$C^$-$1

0.055 $^\circ$C^$-$1

Solution

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