Question

the length of wire is doubled by stretching it what will be new resistance of
wire

Answer 1

If the wire is stretching. Then. Its resistance would be increases..

Answer 2

Hey dear,

Here is your answer....

As we know resistance = length / area

so, let original resistance = l/a

if length is doubled then ,

new resistance = 2l/a
= 2 original resistance.

Hence we can say that by doubling length the resistance will also get doubled...

Hope it helps you..

Thanks...

^_^