The magnetic field 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)
The magnetic field 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)
- A
$\frac{{{\mu _0}}}{{4\pi }} \times \frac{M}{{{r^2}}}$
- B
$\frac{{{\mu _0}}}{{4\pi }} \times \frac{M}{{{r^3}}}$
- C
$\frac{{{\mu _0}}}{{4\pi }} \times \frac{{2M}}{{{r^2}}}$
- D
$\frac{{{\mu _0}}}{{4\pi }} \times \frac{{2M}}{{{r^3}}}$
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