Question

If a wire is stretched such that radius becomes half find new resistance

Answer 1

$resistance = \frac{rho \times length}{ area}$
when radius is reduced by half, and considering contact volume we get new length as 4L

so the new resistance will be 16 times more.

If you find the answer please brainliest me.

Answer 2

Hope it helps If you have any questions ask me I'm comment