Question

A given length of a wire is double on itself and this process is repeated once she again . By which factor does the resistance of the wire change?

Answer 1

if the length of the wire is drawn to double its length,then the length has increased double and area get reduced to half. so the resistance will be 4 times.
and then the process is repeated, so the resistance will increase 4 times. so totally, the resistance get increased by 16 times

Answer 2

Answer:

The length of wire is doubled on itself and so the area get reduced to half.

The resultant resistance will be 4 times.

The process is repeated and therefore the resistance will increase by 4 times. The total resistance will be increased to 16 times.