At what temperature will aluminum have a resistivity that is three times the resistivity of tungsten at room temperature? (Assume room temperature is 20° C.)

Explanation:

At room temperature, resistivity of tungsten is and the resistivity of aluminium is .

Temperature coefficient of aluminium () =

and,      

                       =

                             T =

                                 =

So, at aluminium has resistivity which is three times the resistivity of tungsten at room temperature.

the answer is 0.8m.

by: nicholas