Question

What would be the new resistance of the length is doubled and are of cross section is halved?

Answer 1

See below

There will be no effect on resistivity because it is the resistance of wire of length one meter and area of cross section one meter square.

Answer 2

Hii

you are welcome in my ans

R1/R2 = (row *L/a)/(row *2*L*4/a)

R1/R2=1/8

8times the initial

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