If the length of a wire is increased by $0.1\%$,what is the percentage increase in its resistance (in $\%$)?

The resistance of a wire is $2.5 \Omega$ at a temperature $373 \ K$. If the temperature coefficient of resistance of the material of the wire is $3.6 \times 10^{-3} \ K^{-1}$,its resistance at a temperature $273 \ K$ is nearly: (in $\Omega$)

Why does the resistance of metallic conductors and semiconductors change differently with a change in temperature?

$A$ nichrome wire $50 \text{ cm}$ long and $1 \text{ mm}^2$ cross-section carries a current of $4 \text{ A}$ when connected to a $2 \text{ V}$ battery. The resistivity of the nichrome wire in $\Omega \cdot \text{m}$ is:

If the length of a wire is increased by $10\%$ by stretching it,the percentage increase in its resistance is ..............$\%$

Constantan wire is used in making standard resistances because its