Question

Magnetic field due to 0.1 A current flowing through a circular
coil of radius 0.Im and 1000 turns at the centre of the coil is​

Answer 1

Answer:

We know that

B = m Ni/2r

B = 4pi × 10^-7 ×1000 ×0.1/2×0.1

B = 2 pi × 10^-4

Put value of pi

B = 2×3.14×10^-4

B = 6.28×10^-4