A moving coil galvanometer has a coil with 175 turns and area 1cm2. It uses a torsion band of torsion constant 10−6N−m/rad. The coil is placed in a magnetic field B parallel to its plane. The coil deflects by 1∘ for a current of 1mA. The value of B (in Tesla) is approximately:
a. 10−4
b. 10−2
c. 10−1
d. 10−3