- #1

Gemy4

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## Homework Statement

At what temperature will aluminum have a resistivity that is three times the resistivity of tungsten at room temperature?

Rt=5.6 X 10^-8 ohm*m (The resistivity coefficient of tungsten at 20 degrees celcius)

R0=1.59 x 10^-8 ohm*m (The resistivity coefficient of silver at 20 degrees celcius)

α =3.9 X 10^-3 degrees celsius ^- 1 (Temperature coefficient of resistivity for aluminum)

ΔT= Tf-Ti

I am not sure what the initial temperature is, I assume its 20 degrees celcius.

## Homework Equations

Rt = R0 * ( 1 + α * ΔT)

## The Attempt at a Solution

3Rt = R0 * ( 1 + α * ΔT)

I get 11.42 degrees celsius which is wrong?

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