Physics

Physics

Problem

A copper wire (resistivity

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

) has a diameter of

0.50\,\text{mm}

. What length of this wire is needed to make a

2\,\Omega

resistor? a)

29\,\text{m}

b)

92\,\text{m}

c)

23\,\text{m}

d)

12\,\text{m}

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