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Problem

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Textbook ExpertVerified Tutor
31 Oct 2021

Given information

It is given that the copper wire is at 20°C and resistance is to be raised by 12%. It is also known that for copper, the temperature coefficient of resistance is 0.0068 per °C.

Step-by-step explanation

Step 1.

 

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

 

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

 

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