Current through the square loop, I = 1.5A
Length of each loop, l = 50cm 50 x 10-2 m
According to Biot-Savart Law.
Magnetic field due to a current carrying straight wire
B =0.084866 x 10-5 T
Magnetic field at a point p? of centre of current carrying square ioop
B’ =4 sides x B
= 4 x 0.08487 x 10-5
= 0.33948 x 10-5
B’ =3.4 x 10-6 T