Q.

Two short bar magnets of equal dipole moments ‘M’ each are fastened perpendicular at their centers as shown in figure. The magnitude of the magnetic field at ‘P’ at a distance d from their common center as shown in figure is

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a

μ02πMd3

b

μ04π2Md3

c

μ04π22Md3

d

μ04πMd3

answer is B.

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Detailed Solution

B=μo4π2Mcos45d3×2

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