Questions

The magnetic field due to a small magnetic dipole of magnetic moment M at distance r from the centre on the equitorial line is given by (in M.K.S system)

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μ04π x Mr2

μ04π x Mr3

μ04π x 2Mr2

μ04π x 2Mr3

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detailed solution

Correct option is B

Bequatorial=μ04π x Mr3

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