JEE PHYSICS MCQ: MAGNETISM AND MATTER

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The magnetic field due to a small magnetic dipole of magnetic moment

M

, at distance

r

from the centre on the equatorial line is given by (in M.K.S system)

View answer and explanation

Correct option: B

\frac{{{\mu _0}}}{{4\pi }} \times \frac{M}{{{r^3}}}

Option B (

\frac{{{\mu _0}}}{{4\pi }} \times \frac{M}{{{{r^3}}}}

) is correct because the magnetic field due to a small magnetic dipole on the equatorial line is inversely proportional to the cube of the distance.

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