Question

a piece of wire having resistance r is cut into four equal parts

a. compare resistance of each part with original resistance

b.if four parts are placed in parallel then find the new resistance

Answer 1

Hope this helps...let me know if I got it wrong please. ☺

Answer 2

(a)1:4
(b)R/8
this is because when length decreases, the resistance too decreases.
here R is the original resistance