# Two identical wires A and B, each of length ‘l’, carry the same current T

Two identical wires *A *and *B, *each of length *‘l’, *carry the same current *T. *Wire A is bent into a circle of radius *R *and wire *B *is bent to form a square of side *‘n’. *If *BA *and *B **8** *are the values of magnetic field at the centres of the circle and square respectively, then the ratio Ba/Bb is :

- π²/8
- π²/16√2
- π²/16
- π²/8√2