A3 km long awg-6 metallic wire has a resistance of approximately 6ω at 20 °c. what material is it made of?

material is aluminum by the approx value of conductivity

Explanation:

given data

length = 3 km

temperature = 20 °C

metallic wire = AWG-6

resistance = 6Ω

to find out

What material is it made of

solution

we know that AWG - 6 has a diameter of 4.1 mm

so we know resistance R is

R =  

here A is area and R is resistance and l is length so find here σ

σ =

σ =

σ = 3.79 × S/m

so according to table 2-1

material is aluminum by the approx value of conductivity

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