Question

a given length of a wire is doubled on itself and this process is repeated by what factor does the resistence of the wire change​

Answer 1

Resistance of a wire is directly proportional to the length of the wire. As its length increases it's resistance increases.

Let x be the resistance of a wire of length L

If length of a wires is doubled to 2L its resistance is doubled to 2x

If it is doubled again, the length of the wire becomes 4L and it's resistance becomes 4x.

Thus if a given length of a wire is doubled on itself and this process is repeated once again it's resistance increases by a factor of 4

Amannnscharlie

Answer 2

Answer:

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

The resultant resitance 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.