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Suppose that you wish to fabricate a uniform wire out of 0.850 g of copper. The wire is to have a resistance of R = 0.700, and all of the copper is to be used.

(a) What is the length of this wire?
m
(b) What is the diameter of this wire?
µm

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Solution Summary

A complete, neat and step-by-step solution is provided that determines the length and diameter of a uniform wire out of 0.850 g of copper.

Solution Preview

Mass, m = 0.85 g = 0.00085 kg, Resistance required, R = 0.7 Ω

Let length of the wire be L and its radius of cross section be r. Then, volume of this wire = π r²L.

(a) ...

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