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Problem

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31 Oct 2021

Given information

 

It is given that the copper wire of 15 Ω resistance is to be cut in two pieces. 

Step-by-step explanation

Step 1.

 

The resistance (R) of a resistor is related with the resistivity of it’s material (ρ), it’s length (l) and the cross-sectional area (A) as

    

For constant resistivity (ρ), and cross-sectional area (A).

 

 

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