Question

What would be new resistance if
Length of Conductor u dobled and thickness
is halveda
tell me briefly ​

Answer 1

Therefore, the new resistance is 8 times than that of the old resistance. 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.

Answer 2

Answer:

The new resistance would be 8 times the previous resistance.

since,

R=μ ×l/a where, μ is resistivity of conductor.

here, length is doubled and thickness is halved.

which means new area will be 1/4times the original area because, area=πr²

hence new resistance would be 8 times.(4×2)