Question

A length of wire is cut in half and the two lengths are wrapped together side by side to make a thicker wire. How does
the resistance of this new combination compare to the resistance of the original wire?​

Answer 1

Answer:

Let the starting resistance is R ,now cut it in half in two peice now resistance is R/2 AND R/2. RIGHT

now come to parallel combination

1/Req = 1/r1 +1/r2

There for. 1/(r/2) +1/(r/2)

It will look like = 2/R+2/R = 4/R

Now R equivalent= R/4

Answer 2

Answer:

now r equivalent is r/2