A Circular Loop of Wire 10 Cm in Radius Carries $\mu$

Multiple Choice

A circular loop of wire 10 cm in radius carries a current of 20 A.The axial magnetic field 15 cm from the center of the loop is approximately

A) 37 $\mu$ T
B) 13 $\mu$ T
C) 21 $\mu$ T
D) 41 $\mu$ T
E) 18 $\mu$ T