In which direction would the magnetic field o | vedclass

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Question

(A) The correct answer is $A$.For a bar magnet,the magnetic field $\overrightarrow{B}$ at a point on its axial line at a distance $Z$ from the center

Vedclass · Accepted Answer

In the direction of the magnetic dipole moment ( $\overrightarrow{M}$ ) of the magnet.

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(A) The correct answer is $A$.For a bar magnet,the magnetic field $\overrightarrow{B}$ at a point on its axial line at a distance $Z$ from the center is given by the formula:$\overrightarrow{B} = \frac{\mu_0}{4\pi} \frac{2\overrightarrow{M}}{Z^3}$where $\overrightarrow{M}$ is the magnetic dipole moment of the magnet.Since the expression for the magnetic field is directly proportional to the magnetic dipole moment vector $\overrightarrow{M}$,the direction of the magnetic field $\overrightarrow{B}$ is the same as the direction of the magnetic dipole moment $\overrightarrow{M}$.

In which direction would the magnetic field on the axis at a distance $Z$ from the centre of the bar magnet be?

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