A cylindrical wire is long and has a uniform cross-sectional area of

PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity

Problem

A cylindrical wire is

2.00\,\text{m}

long and has a uniform cross-sectional area of

1.00\times10^{-6}\,\text{m}^{2}

. Its measured resistance at

20\,^{\circ}\text{C}

0.034\,\Omega

. Identify the most likely material from the following list and state its resistivity: aluminum (

2.7\times10^{-8}\,\Omega\cdot\text{m}

), nichrome (

1.1\times10^{-6}\,\Omega\cdot\text{m}

), copper (

1.7\times10^{-8}\,\Omega\cdot\text{m}