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Questions  

Magnetic intensity for an axial point due to a short bar magnet of magnetic moment M is given by

a
μ04π x Md3
b
μ04π x Md2
c
μ02π x Md3
d
μ02π x Md2

detailed solution

Correct option is C

Ba=μ04π x 2Md3=μ02π x Md3

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Due to a small magnet, intensity at a distance x in the end on position is 9 gauss. What will be the intensity at a distance x2 on broad side on position?


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