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31 Oct 2021

Given information

It is given that the length of aluminium wire is connected to a precision 10.00-V power supply, which gives a current of 0.4212 A at     and 0.3818 A at an unknown temperature. It is also known that the temperature coefficient of resistance of aluminium is   

Step-by-step explanation

Step 1.

 

The resistance  R at temperature    is correlated to the reference temperature     and the resistance at that temperature is     as,

Varying resistance with temperature is

 

Here,      is the temperature coefficient of resistance of the given material

 

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