Question

A copper wire has a resistance of 10 ohm. It is streched by one tenth

Answer 1

l1= l. L2= 11/10l

A1 = A A2=10/11 A

R1/R2 = l1/L2 * A2/A1

10/R2 = 100/121

R2 = 12.1 ohm

Hope this helps

Answer 2

New resistance is 12.1 ohm.

Hope it help you..