A rectangular conducting strip is long

PHYSICS · Multi-part · CBSE · Physics · Current Electricity · Current Electricity

Problem

A rectangular conducting strip is

15\,\text{cm}

long,

4.0\,\text{mm}

wide, and

0.20\,\text{mm}

thick. Its resistance at room temperature is

0.95\,\Omega

. (a) Determine the resistivity of the strip. (b) State whether brass (

\rho = 7.0 \times 10^{-8}\,\Omega \cdot \text{m}

) is a plausible candidate material and briefly justify your answer.