Question

Q.9) Coil having 1000 turns, radius 1m carries current of 100mA .Calculate magnetic moment of coil...
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Answer 1

Answer:

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

Substituting the given values,

B=

2×0.1

4π×10

−7

×1000

;B=6.28×10

−2

Wb/m

2