Question

Stretched to make it 0.1% longer then the percentage change resistance is approximately

Answer 1

Answer:

Explanation:

As we learnt

 

Ratio of resistances -

 

If length is given

R \alpha l^{2}

- wherein

\frac{R_{1}}{R_{2}}=\left (\frac{l_{1}}{l_{2}} \right )^{2}