A straight wire of diameter 0.5 mm carrying a current of 1 A is replaced by another wire of 1 mm diameter carrying same current. The strength of magnetic field far away is.
twice the earlier value.
same as the earlier value.
one-half of the earlier value.
one-quarter of the earlier value.
and so it is independent of thickness.
The current is same in both the wires, hence magnetic field induced will be same.