Question

A circular coil of wire consisting of 100 turns each of radius 8.0 cm carries a current of 0.40 A find magnetic field

Answer 1

Explanation:

Correct option is

C

=3.14×10

−4

T

B=μ

o

4πr

2πNI

=

4π×0.08

4π×10

−7

×2π×100×0.4

=3.14×10

−4

T