As part of a class project you are given 0.900 g of Nichrome and asked to fabricate a wire with uniform cross-section. You use up 95% of the Nichrome and make a wire with a resistance of 0.623 Ω. The resistivity of Nichrome is 1.00 • 10-6 Ω•m and its density is 8.31 • 103 kg/m3. a) What length of wire do you end up with? ___ m b) What is the diameter of the wire? ___ mm

College Physics
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Chapter17: Current And Resistance
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As part of a class project you are given 0.900 g of Nichrome and asked to fabricate a wire with uniform cross-section. You use up 95% of the Nichrome and make a wire with a resistance of 0.623 Ω. The resistivity of Nichrome is 1.00 • 10-6 Ω•m and its density is 8.31 • 103 kg/m3.

a) What length of wire do you end up with?

___ m

b) What is the diameter of the wire?

___ mm

Expert Solution
Step 1

Mass of wire = 0.9 g Percentage of nichrome used = 95%Therefore, mass of nichrome used = 0.95×0.90 g= 0.855 g = 0.000855 kgdensity of nichrome = 8310 kgm3

 

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