The length of a given cylindrical wire is increased by 100% due to the consequent decrease in diameter the change in the resistance of the wire will be

Question

Arun · Answer

As we knowR = p L/A

New l` = 2l ..

Due to increase in length, area must decrease as volume remains constant..

Al = A`l`

Hence, A` = A/2

New Resistance R` = pl`/A` = 4pl/A
Change in resistance = 3pl/A or 300 %

Aastha Singh · Answer

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The length of a given cylindrical wire is increased by 100% due to the consequent decrease in diameter the change in the resistance of the wire will be

The length of a given cylindrical wire is increased by 100% due to the consequent decrease in diameter the change in the resistance of the wire will be

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