Question

a cylinder wire having 10 ohm resistance is stretched to increase its length by 10% calculate its new resistance​

Answer 1

Answer:

12.1 ohm

Explanation:

let the initial length be L

therefore new length will be increased by 10% i.e. (1.1 L)

now we know that

(R1/R2) = (L1/L2)^2

therefore,

(10/R2) = (L/1.1 L)^2

or R2 = 12.1 ohm