Question

the resistance of the wire when the length of the wire increases two times and are reduce by half
1 two times
2 four times
3 3 times
4 1/2 times

Answer 1

The resistance of wire is directly proportional to length of conductor.
I can't say the answer correctly.
Plss help us

Answer 2

resistance (R) is directly proportional to length (L)
when I is increases 2times is 2l and it's reduces half means 2l / 1/2 =2lx2=4l..

therefore the answer is(2) 4 times