Question

If the length of the conductor is double then what will be the new resistance of the conductor?​

Answer 1

Answer:   4 times

R=ρL/A  

now length=2L

A=A/2

SO new reistance R1=ρ2L/A/2

R1=4ρL/A

R1=4(ρL/A)

SO new reistances almost increase by 4 times

Hope it helps u !!

Answer 2

Answer:

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If the length of the conductor is doubled then the resistance would increase by 8 times. Since length becomes 2l and the cross-sectional area becomes 14th.

Hence, Almost the new resistance of the conductor increases by 4 times.