The total number of magnetic lines of force originating or terminating on a pole of strength m is :

\frac{μ_{o} m}{4 π}

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\frac{m}{μ_{o}}

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m^{2}

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μ_{o} m

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Solution

The correct option is D $μ_{o} m$
The magnetic field at a distance ' $r$ ' by a magnetic pole is given by
$B = \frac{μ_{o} m}{4 π r^{2}}$
The magnetic field lines passing through the sphere of radius ' $r$ ' is $\frac{μ_{o} m}{4 π r^{2}} \times 4 π r^{2}$
$n = μ_{o} m$

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The total number of magnetic lines of force originating or terminating on a pole of strength m is :

The correct option is D μomThe magnetic field at a distance 'r' by a magnetic pole is given by B=μom4πr2The magnetic field lines passing through the sphere of radius 'r' is μom4πr2×4πr2n=μom

The correct option is D $μ_{o} m$
The magnetic field at a distance ' $r$ ' by a magnetic pole is given by
$B = \frac{μ_{o} m}{4 π r^{2}}$
The magnetic field lines passing through the sphere of radius ' $r$ ' is $\frac{μ_{o} m}{4 π r^{2}} \times 4 π r^{2}$
$n = μ_{o} m$