A piece of wire is cut into four equal parts and the pieces are bundled together side by side to form a thicker wire. Compared with that of the original wire, the resistance of the bundle is
Answer & explanation
Correct answer: option 4
$ \text{Let resistance of original wire is R}$
$ \text{Resistance of one part of the wire is R/4}$
$ \text{When these are connected in parallel then } R'= \frac{R}{16}$