Question

calculate the new resistance from the original resistance when the wire is redrawn its volume remains same and the radius become half​

Answer 1

radius half so area will be 1/4th

as volume constant so length will 4times

so the resistance will be 4/(1/4)=16 times

Answer 2

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HERE IS UR ANSWER

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✔✔R=pL/A

when radius is halved the area will be ¼th

R'=pL/¼A

R'=4pL/A

R'=4R

resistance will be 4 times the original one