Question

a circular coil has radius 0.1m and no. of turn 50 and current i . the magnetic induction B at a point on the axis of coil and distance 0.2 m from the centre.​

Answer 1

Given : Current (I)=10A, No. of turns (n)=1000

Radius(r)=0.1m,Permeability(μ

0

)=4π×10

−7

N/A

2

To calculate : Magnetic field at the centre of the coil (B)=?

Formula to be used : B=

2r

μ

0

I×n

I think this is the answer

Substituting the given values,

B=

2×0.1

4π×10

−7

×1000

;B=6.28×10

−2

Wb/m

2