Question

A wire of certain length has a resistance of 24 ohm. If is recast by reducing its length to half. Calculate the new resistance.​

Answer 1

Explanation:

Solution. (a) Resistance of a wire is directly proportional to the length of a wire; so if the length is doubled, resistance is also doubled. ... Thus, if radius is doubled, area increases four times and hence the resistance becomes one-fourth

Answer 2

Answer:

hey mate here is ur ans

Explanation:

let the length of wire be L

resistance R = (rho) L/A = 24

if lenght of wire is half then L' = L/2

new resistance is R'

R' = (rho) (L/2)/A

R' = (rho)L/A 1/2

R' = R/2 = 24/2 = 12 ohm

it mean resistance is directly proportional to lenght

hope it help u