Physics

Problem

A straight nichrome wire has resistivity

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

, length

2.0\,\text{m}

, and diameter

1.0\,\text{mm}

. The wire is connected across a

9.0\,\text{V}

battery. What is the magnitude of the current through the wire? a)

1.6\ \text{A}

5.0\ \text{A}

3.2\ \text{A}

0.32\ \text{A}