Question
Asked Dec 19, 2019
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At what temperature will aluminum have a resistivity that is
three times the resistivity of copper at room temperature?

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Expert Answer

Step 1

The equation for the resistivity is

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p= p(1+a[T, -T,]) Po is the initial resistivity of Al pis the resistivity of Al at temperature T,

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Step 2

Solve the above equation fo...

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T, =T, + a Po 1(3PCH -1 =T, + Po (1 3x2.8 x10 2 - m 1.7x10-2· m = 20°C + 0.0024 °C- = 227°C

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