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+1 vote
20.9k views
in Physics by (79.8k points)

Magnetic field due to a current carrying loop or a coil at a distant axial point P is B1 and at an equal distance in it's plane is B2 then B1/B2 is 

(a) 2 

(b) 1 

(c) 2/1 

(d) None of these

1 Answer

+1 vote
by (71.7k points)
selected by
 
Best answer

Correct option (a) 2

Explanation:

Current carrying coil behaves as a bar magnet as shown in figure. We also knows for a bar magnet, if axial and equatorial distance are same then Ba = 2Be

Hence, in this equation  B1/ B2 = 2/1

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