Question

Two concentric circular coils of ten turns each are situated
in the same plane. Their radii are 20 and 40 cm and they carry
respectively 0.2 and 0.4 ampere current in opposite direction.
The magnetic field in weber/m² at the centre is
(a) μ₀/80 (b) 7μ₀/80 (c) (5/4) μ₀ (d) zero

Answer 1

Answer:

c

Explanation:

i hope i will brainliest

Answer 2

Answer:

c is the answer

hope it had helped you