Problem

You want to precut a set of 1.00$\Omega$ strips o…

02:35

Problem 6 Medium Difficulty

A 14 gauge copper wire of diameter 1.628 $\mathrm{mm}$ carries a current of 12.5 $\mathrm{mA}$ (a) What is the potential difference across a 2.00 $\mathrm{m}$ length of the wire? (b) What would the potential difference in part (a) be if the wire were silver instead of copper, but all else was the same?

Answer

a)
$V=2.063 \times 10^{-4} \mathrm{V}$
b)
$V=1.75 \times 10^{-4} \mathrm{V}$

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Physics 102 Electricity and Magnetism

College Physics

Chapter 19

Current, Resistance, and Direct-Current Circuit

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Video Transcript

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